;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016, 2017 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016 Matthew Jordan <matthewjordandevops@yandex.com>
;;; Copyright © 2016 Andy Wingo <wingo@igalia.com>
;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2016, 2017 Petter <petter@mykolab.ch>
;;; Copyright © 2016, 2017 Leo Famulari <leo@famulari.name>
;;; Copyright © 2017 Sergei Trofimovich <slyfox@inbox.ru>
;;; Copyright © 2017 Alex Vong <alexvong1995@gmail.com>
;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2018 Christopher Baines <mail@cbaines.net>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages golang)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix utils)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module (guix packages)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system go)
  #:use-module (gnu packages admin)
  #:use-module (gnu packages gcc)
  #:use-module (gnu packages base)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages pcre)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-1))

;; According to https://golang.org/doc/install/gccgo, gccgo-4.8.2 includes a
;; complete go-1.1.2 implementation, gccgo-4.9 includes a complete go-1.2
;; implementation, and gccgo-5 a complete implementation of go-1.4.  Ultimately
;; we hope to build go-1.5+ with a bootstrap process using gccgo-5.  As of
;; go-1.5, go cannot be bootstrapped without go-1.4, so we need to use go-1.4 or
;; gccgo-5.  Mips is not officially supported, but it should work if it is
;; bootstrapped.

(define-public go-1.4
  (package
    (name "go")
    (version "1.4.3")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://storage.googleapis.com/golang/"
                                  name version ".src.tar.gz"))
              (sha256
               (base32
                "0na9yqilzpvq0bjndbibfp07wr796gf252y471cip10bbdqgqiwr"))))
    (build-system gnu-build-system)
    (outputs '("out"
               "doc"
               "tests"))
    (arguments
     `(#:modules ((ice-9 match)
                  (guix build gnu-build-system)
                  (guix build utils)
                  (srfi srfi-1))
       #:tests? #f ; Tests are run by the all.bash script.
       #:phases
       (modify-phases %standard-phases
         (delete 'configure)
         (add-after 'patch-generated-file-shebangs 'chdir
           (lambda _
             (chdir "src")))
         (add-before 'build 'prebuild
           (lambda* (#:key inputs outputs #:allow-other-keys)
             (let* ((gcclib (string-append (assoc-ref inputs "gcc:lib") "/lib"))
                    (ld (string-append (assoc-ref inputs "libc") "/lib"))
                    (loader (car (find-files ld "^ld-linux.+")))
                    (net-base (assoc-ref inputs "net-base"))
                    (tzdata-path
                     (string-append (assoc-ref inputs "tzdata") "/share/zoneinfo"))
                    (output (assoc-ref outputs "out")))

               ;; Removing net/ tests, which fail when attempting to access
               ;; network resources not present in the build container.
               (for-each delete-file
                         '("net/multicast_test.go" "net/parse_test.go"
                           "net/port_test.go"))

               ;; Add libgcc to the RUNPATH.
               (substitute* "cmd/go/build.go"
                 (("cgoldflags := \\[\\]string\\{\\}")
                  (string-append "cgoldflags := []string{"
                                 "\"-rpath=" gcclib "\"}"))
                 (("ldflags := buildLdflags")
                  (string-append
                   "ldflags := buildLdflags\n"
                   "ldflags = append(ldflags, \"-r\")\n"
                   "ldflags = append(ldflags, \"" gcclib "\")\n")))

               (substitute* "os/os_test.go"
                 (("/usr/bin") (getcwd))
                 (("/bin/pwd") (which "pwd")))

               ;; Disable failing tests: these tests attempt to access
               ;; commands or network resources which are neither available or
               ;; necessary for the build to succeed.
               (for-each
                (match-lambda
                  ((file regex)
                   (substitute* file
                     ((regex all before test_name)
                      (string-append before "Disabled" test_name)))))
                '(("net/net_test.go" "(.+)(TestShutdownUnix.+)")
                  ("net/dial_test.go" "(.+)(TestDialTimeout.+)")
                  ("os/os_test.go" "(.+)(TestHostname.+)")
                  ("time/format_test.go" "(.+)(TestParseInSydney.+)")

                  ;; Tzdata 2016g changed the name of the time zone used in this
                  ;; test, and the patch for Go 1.7 does not work for 1.4.3:
                  ;; https://github.com/golang/go/issues/17545
                  ;; https://github.com/golang/go/issues/17276
                  ("time/time_test.go" "(.+)(TestLoadFixed.+)")
                  ("time/format_test.go" "(.+)(TestParseInLocation.+)")

                  ("os/exec/exec_test.go" "(.+)(TestEcho.+)")
                  ("os/exec/exec_test.go" "(.+)(TestCommandRelativeName.+)")
                  ("os/exec/exec_test.go" "(.+)(TestCatStdin.+)")
                  ("os/exec/exec_test.go" "(.+)(TestCatGoodAndBadFile.+)")
                  ("os/exec/exec_test.go" "(.+)(TestExitStatus.+)")
                  ("os/exec/exec_test.go" "(.+)(TestPipes.+)")
                  ("os/exec/exec_test.go" "(.+)(TestStdinClose.+)")
                  ("syscall/syscall_unix_test.go" "(.+)(TestPassFD\\(.+)")
                  ("os/exec/exec_test.go" "(.+)(TestExtraFiles.+)")))

               (substitute* "net/lookup_unix.go"
                 (("/etc/protocols") (string-append net-base "/etc/protocols")))
               (substitute* "time/zoneinfo_unix.go"
                 (("/usr/share/zoneinfo/") tzdata-path))
               (substitute* (find-files "cmd" "asm.c")
                 (("/lib/ld-linux.*\\.so\\.[0-9]") loader))
               #t)))

         (replace 'build
           (lambda* (#:key inputs outputs #:allow-other-keys)
             ;; FIXME: Some of the .a files are not bit-reproducible.
             (let* ((output (assoc-ref outputs "out")))
               (setenv "CC" (which "gcc"))
               (setenv "GOOS" "linux")
               (setenv "GOROOT" (dirname (getcwd)))
               (setenv "GOROOT_FINAL" output)
               ;; Go 1.4's cgo will not work with binutils >= 2.27:
               ;; https://github.com/golang/go/issues/16906
               (setenv "CGO_ENABLED" "0")
               (zero? (system* "sh" "all.bash")))))

         (replace 'install
           (lambda* (#:key outputs inputs #:allow-other-keys)
             (let* ((output (assoc-ref outputs "out"))
                    (doc_out (assoc-ref outputs "doc"))
                    (bash (string-append (assoc-ref inputs "bash") "bin/bash"))
                    (docs (string-append doc_out "/share/doc/" ,name "-" ,version))
                    (tests (string-append
                            (assoc-ref outputs "tests") "/share/" ,name "-" ,version)))
               (mkdir-p tests)
               (copy-recursively "../test" (string-append tests "/test"))
               (delete-file-recursively "../test")
               (mkdir-p docs)
               (copy-recursively "../api" (string-append docs "/api"))
               (delete-file-recursively "../api")
               (copy-recursively "../doc" (string-append docs "/doc"))
               (delete-file-recursively "../doc")

               (for-each (lambda (file)
                           (let ((file (string-append "../" file)))
                             (install-file file docs)
                             (delete-file file)))
                         '("README" "CONTRIBUTORS" "AUTHORS" "PATENTS"
                           "LICENSE" "VERSION" "robots.txt"))
               (copy-recursively "../" output)
               #t))))))
    (inputs
     `(("tzdata" ,tzdata)
       ("pcre" ,pcre)
       ;; Building Go 1.10 with the Go 1.4 bootstrap, Thread Sanitizer from GCC
       ;; 5 finds a data race during the the test suite of Go 1.10. With GCC 6,
       ;; the race doesn't seem to be present:
       ;; https://github.com/golang/go/issues/24046
       ("gcc:lib" ,gcc-6 "lib")))
    (native-inputs
     `(("pkg-config" ,%pkg-config)
       ("which" ,which)
       ("net-base" ,net-base)
       ("perl" ,perl)))

    (home-page "https://golang.org/")
    (synopsis "Compiler and libraries for Go, a statically-typed language")
    (description "Go, also commonly referred to as golang, is an imperative
programming language designed primarily for systems programming.  Go is a
compiled, statically typed language in the tradition of C and C++, but adds
garbage collection, various safety features, and concurrent programming features
in the style of communicating sequential processes (@dfn{CSP}).")
    (supported-systems '("x86_64-linux" "i686-linux" "armhf-linux"))
    (license license:bsd-3)))

(define-public go-1.9
  (package
    (inherit go-1.4)
    (name "go")
    (version "1.9.4")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://storage.googleapis.com/golang/"
                           name version ".src.tar.gz"))
       (sha256
        (base32
         "01nw8rfvf10naja0wq0kabsm012sbqq76hd4b8c7g28n6ggshwq5"))))
    (arguments
     (substitute-keyword-arguments (package-arguments go-1.4)
       ((#:phases phases)
        `(modify-phases ,phases
           (replace 'prebuild
             ;; TODO: Most of this could be factorized with Go 1.4.
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((gcclib (string-append (assoc-ref inputs "gcc:lib") "/lib"))
                      (ld (string-append (assoc-ref inputs "libc") "/lib"))
                      (loader (car (find-files ld "^ld-linux.+")))
                      (net-base (assoc-ref inputs "net-base"))
                      (tzdata-path
                       (string-append (assoc-ref inputs "tzdata") "/share/zoneinfo"))
                      (output (assoc-ref outputs "out")))

                 ;; Removing net/ tests, which fail when attempting to access
                 ;; network resources not present in the build container.
                 (for-each delete-file
                           '("net/listen_test.go"
                             "net/parse_test.go"
                             "net/cgo_unix_test.go"))

                 (substitute* "os/os_test.go"
                   (("/usr/bin") (getcwd))
                   (("/bin/pwd") (which "pwd"))
                   (("/bin/sh") (which "sh")))

                 ;; Add libgcc to runpath
                 (substitute* "cmd/link/internal/ld/lib.go"
                   (("!rpath.set") "true"))
                 (substitute* "cmd/go/internal/work/build.go"
                   (("cgoldflags := \\[\\]string\\{\\}")
                    (string-append "cgoldflags := []string{"
                                   "\"-rpath=" gcclib "\""
                                   "}"))
                   (("ldflags = setextld\\(ldflags, compiler\\)")
                    (string-append
                     "ldflags = setextld(ldflags, compiler)\n"
                     "ldflags = append(ldflags, \"-r\")\n"
                     "ldflags = append(ldflags, \"" gcclib "\")\n"))
                   (("\"-lgcc_s\", ")
                    (string-append
                     "\"-Wl,-rpath=" gcclib "\", \"-lgcc_s\", ")))

                 ;; Disable failing tests: these tests attempt to access
                 ;; commands or network resources which are neither available
                 ;; nor necessary for the build to succeed.
                 (for-each
                  (match-lambda
                    ((file regex)
                     (substitute* file
                       ((regex all before test_name)
                        (string-append before "Disabled" test_name)))))
                  '(("net/net_test.go" "(.+)(TestShutdownUnix.+)")
                    ("net/dial_test.go" "(.+)(TestDialTimeout.+)")
                    ("os/os_test.go" "(.+)(TestHostname.+)")
                    ("time/format_test.go" "(.+)(TestParseInSydney.+)")
                    ("time/format_test.go" "(.+)(TestParseInLocation.+)")
                    ("os/exec/exec_test.go" "(.+)(TestEcho.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCommandRelativeName.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCatStdin.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCatGoodAndBadFile.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExitStatus.+)")
                    ("os/exec/exec_test.go" "(.+)(TestPipes.+)")
                    ("os/exec/exec_test.go" "(.+)(TestStdinClose.+)")
                    ("os/exec/exec_test.go" "(.+)(TestIgnorePipeErrorOnSuccess.+)")
                    ("syscall/syscall_unix_test.go" "(.+)(TestPassFD\\(.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFiles/areturn.+)")
                    ("cmd/go/go_test.go" "(.+)(TestCoverageWithCgo.+)")
                    ("os/exec/exec_test.go" "(.+)(TestOutputStderrCapture.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFiles.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFilesRace.+)")
                    ("net/lookup_test.go" "(.+)(TestLookupPort.+)")
                    ("syscall/exec_linux_test.go"
                     "(.+)(TestCloneNEWUSERAndRemapNoRootDisableSetgroups.+)")))

                 (substitute* "../misc/cgo/testsanitizers/test.bash"
                   (("(CC=)cc" all var) (string-append var "gcc")))

                 ;; fix shebang for testar script
                 ;; note the target script is generated at build time.
                 (substitute* "../misc/cgo/testcarchive/carchive_test.go"
                   (("#!/usr/bin/env") (string-append "#!" (which "env"))))

                 (substitute* "net/lookup_unix.go"
                   (("/etc/protocols") (string-append net-base "/etc/protocols")))
                 (substitute* "net/port_unix.go"
                   (("/etc/services") (string-append net-base "/etc/services")))
                 (substitute* "time/zoneinfo_unix.go"
                   (("/usr/share/zoneinfo/") tzdata-path))
                 (substitute* (find-files "cmd" "\\.go")
                   (("/lib(64)?/ld-linux.*\\.so\\.[0-9]") loader))
                 #t)))
           (add-before 'build 'set-bootstrap-variables
             (lambda* (#:key outputs inputs #:allow-other-keys)
               ;; Tell the build system where to find the bootstrap Go.
               (let ((go  (assoc-ref inputs "go"))
                     (out (assoc-ref outputs "out")))
                 (setenv "GOROOT_BOOTSTRAP" go)
                 (setenv "PATH"
                         (string-append out "/bin:"
                                        (dirname (getcwd)) "/bin:"
                                        (getenv "PATH")))

                 ;; XXX: The following variables seem unrelated.
                 (setenv "GOGC" "400")
                 (setenv "GO_TEST_TIMEOUT_SCALE" "9999")
                 #t)))

           (replace 'build
             (lambda* (#:key inputs outputs #:allow-other-keys)
               ;; FIXME: Some of the .a files are not bit-reproducible.
               (let* ((output (assoc-ref outputs "out")))
                 (setenv "CC" (which "gcc"))
                 (setenv "GOOS" "linux")
                 (setenv "GOROOT" (dirname (getcwd)))
                 (setenv "GOROOT_FINAL" output)
                 (setenv "CGO_ENABLED" "1")
                 (zero? (system* "sh" "all.bash")))))

           (replace 'install
             ;; TODO: Most of this could be factorized with Go 1.4.
             (lambda* (#:key outputs #:allow-other-keys)
               (let* ((output (assoc-ref outputs "out"))
                      (doc_out (assoc-ref outputs "doc"))
                      (docs (string-append doc_out "/share/doc/" ,name "-" ,version))
                      (src (string-append
                            (assoc-ref outputs "tests") "/share/" ,name "-" ,version)))
                 (delete-file-recursively "../pkg/bootstrap")

                 (mkdir-p src)
                 (copy-recursively "../test" (string-append src "/test"))
                 (delete-file-recursively "../test")
                 (mkdir-p docs)
                 (copy-recursively "../api" (string-append docs "/api"))
                 (delete-file-recursively "../api")
                 (copy-recursively "../doc" (string-append docs "/doc"))
                 (delete-file-recursively "../doc")

                 (for-each
                  (lambda (file)
                    (let* ((filein (string-append "../" file))
                           (fileout (string-append docs "/" file)))
                      (copy-file filein fileout)
                      (delete-file filein)))
                  ;; Note the slightly different file names compared to 1.4.
                  '("README.md" "CONTRIBUTORS" "AUTHORS" "PATENTS"
                    "LICENSE" "VERSION" "CONTRIBUTING.md" "robots.txt"))

                 (copy-recursively "../" output))))))))
    (native-inputs
     `(("go" ,go-1.4)
       ,@(package-native-inputs go-1.4)))
    (supported-systems %supported-systems)))

(define-public go-1.10
  (package
    (inherit go-1.9)
    (name "go")
    (version "1.10")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://storage.googleapis.com/golang/"
                           name version ".src.tar.gz"))
       (sha256
        (base32
         "093z1h0gmi458kv7smpx0ph6jm7ss9mzxa432kysbz85jhl4kppk"))))
    (arguments
     (substitute-keyword-arguments (package-arguments go-1.9)
       ((#:phases phases)
        `(modify-phases ,phases
           (replace 'prebuild
             (lambda* (#:key inputs outputs #:allow-other-keys)
               (let* ((gcclib (string-append (assoc-ref inputs "gcc:lib") "/lib"))
                      (ld (string-append (assoc-ref inputs "libc") "/lib"))
                      (loader (car (find-files ld "^ld-linux.+")))
                      (net-base (assoc-ref inputs "net-base"))
                      (tzdata-path
                       (string-append (assoc-ref inputs "tzdata") "/share/zoneinfo"))
                      (output (assoc-ref outputs "out")))

                 ;; Removing net/ tests, which fail when attempting to access
                 ;; network resources not present in the build container.
                 (for-each delete-file
                           '("net/listen_test.go"
                             "net/parse_test.go"
                             "net/cgo_unix_test.go"))

                 (substitute* "os/os_test.go"
                   (("/usr/bin") (getcwd))
                   (("/bin/pwd") (which "pwd"))
                   (("/bin/sh") (which "sh")))

                 ;; Add libgcc to runpath
                 (substitute* "cmd/link/internal/ld/lib.go"
                   (("!rpath.set") "true"))
                 (substitute* "cmd/go/internal/work/gccgo.go"
                   (("cgoldflags := \\[\\]string\\{\\}")
                    (string-append "cgoldflags := []string{"
                                   "\"-rpath=" gcclib "\""
                                   "}"))
                   (("\"-lgcc_s\", ")
                    (string-append
                     "\"-Wl,-rpath=" gcclib "\", \"-lgcc_s\", ")))
                 (substitute* "cmd/go/internal/work/gc.go"
                   (("ldflags = setextld\\(ldflags, compiler\\)")
                    (string-append
                     "ldflags = setextld(ldflags, compiler)\n"
                     "ldflags = append(ldflags, \"-r\")\n"
                     "ldflags = append(ldflags, \"" gcclib "\")\n")))

                 ;; Disable failing tests: these tests attempt to access
                 ;; commands or network resources which are neither available
                 ;; nor necessary for the build to succeed.
                 (for-each
                  (match-lambda
                    ((file regex)
                     (substitute* file
                       ((regex all before test_name)
                        (string-append before "Disabled" test_name)))))
                  '(("net/net_test.go" "(.+)(TestShutdownUnix.+)")
                    ("net/dial_test.go" "(.+)(TestDialTimeout.+)")
                    ("os/os_test.go" "(.+)(TestHostname.+)")
                    ("time/format_test.go" "(.+)(TestParseInSydney.+)")
                    ("time/format_test.go" "(.+)(TestParseInLocation.+)")
                    ("os/exec/exec_test.go" "(.+)(TestEcho.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCommandRelativeName.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCatStdin.+)")
                    ("os/exec/exec_test.go" "(.+)(TestCatGoodAndBadFile.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExitStatus.+)")
                    ("os/exec/exec_test.go" "(.+)(TestPipes.+)")
                    ("os/exec/exec_test.go" "(.+)(TestStdinClose.+)")
                    ("os/exec/exec_test.go" "(.+)(TestIgnorePipeErrorOnSuccess.+)")
                    ("syscall/syscall_unix_test.go" "(.+)(TestPassFD\\(.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFiles/areturn.+)")
                    ("cmd/go/go_test.go" "(.+)(TestCoverageWithCgo.+)")
                    ("os/exec/exec_test.go" "(.+)(TestOutputStderrCapture.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFiles.+)")
                    ("os/exec/exec_test.go" "(.+)(TestExtraFilesRace.+)")
                    ("net/lookup_test.go" "(.+)(TestLookupPort.+)")
                    ("syscall/exec_linux_test.go"
                     "(.+)(TestCloneNEWUSERAndRemapNoRootDisableSetgroups.+)")))

                 ;; fix shebang for testar script
                 ;; note the target script is generated at build time.
                 (substitute* "../misc/cgo/testcarchive/carchive_test.go"
                   (("#!/usr/bin/env") (string-append "#!" (which "env"))))

                 (substitute* "net/lookup_unix.go"
                   (("/etc/protocols") (string-append net-base "/etc/protocols")))
                 (substitute* "net/port_unix.go"
                   (("/etc/services") (string-append net-base "/etc/services")))
                 (substitute* "time/zoneinfo_unix.go"
                   (("/usr/share/zoneinfo/") tzdata-path))
                 (substitute* (find-files "cmd" "\\.go")
                   (("/lib(64)?/ld-linux.*\\.so\\.[0-9]") loader))
                 #t)))
           (replace 'set-bootstrap-variables
             (lambda* (#:key outputs inputs #:allow-other-keys)
               ;; Tell the build system where to find the bootstrap Go.
               (let ((go  (assoc-ref inputs "go")))
                 (setenv "GOROOT_BOOTSTRAP" go)
                 (setenv "GOGC" "400")
                 ;; Go 1.10 tries to write to $HOME in a test
                 (setenv "HOME" "/tmp")
                 #t)))))))))

(define-public go go-1.9)

(define-public go-github-com-alsm-ioprogress
  (let ((commit "063c3725f436e7fba0c8f588547bee21ffec7ac5")
        (revision "0"))
    (package
      (name "go-github-com-alsm-ioprogress")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                       (url "https://github.com/alsm/ioprogress.git")
                       (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "10ym5qlq77nynmkxbk767f2hfwyxg2k7hrzph05hvgzv833dhivh"))))
      (build-system go-build-system)
      (arguments
       '(#:import-path "github.com/alsm/ioprogress"))
      (synopsis "Textual progress bars in Go")
      (description "@code{ioprogress} is a Go library with implementations of
@code{io.Reader} and @code{io.Writer} that draws progress bars.  The primary use
case for these are for command-line applications but alternate progress bar
writers can be supplied for alternate environments.")
      (home-page "https://github.com/alsm/ioprogress")
      (license license:expat))))

(define-public go-github-com-aki237-nscjar
  (let ((commit "e2df936ddd6050d30dd90c7214c02b5019c42f06")
        (revision "0"))
    (package
      (name "go-github-com-aki237-nscjar")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                       (url "https://github.com/aki237/nscjar.git")
                       (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "03y7zzq12qvhsq86lb06sgns8xrkblbn7i7wd886wk3zr5574b96"))))
      (build-system go-build-system)
      (arguments
       '(#:import-path "github.com/aki237/nscjar"))
      (synopsis "Handle Netscape / Mozilla cookies")
      (description "@code{nscjar} is a Go library used to parse and output
Netscape/Mozilla's old-style cookie files.  It also implements a simple cookie
jar struct to manage the cookies added to the cookie jar.")
      (home-page "https://github.com/aki237/nscjar")
      (license license:expat))))

(define-public go-github-com-davidjpeacock-cli
  (let ((commit "8ba6f23b6e36d03666a14bd9421f5e3efcb59aca")
        (revision "0"))
    (package
      (name "go-github-com-davidjpeacock-cli")
      (version (git-version "1.19.1" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                       (url "https://github.com/davidjpeacock/cli.git")
                       (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "01s53ny3p0fdx64rnwcnmjj4xpc5adihnh6islsfq5z1ph2phhnj"))))
      (build-system go-build-system)
      (arguments
       '(#:import-path "github.com/davidjpeacock/cli"))
      (synopsis "Build command-line interfaces in Go")
      (description "@code{cli} is a package for building command line
interfaces in Go.  The goal is to enable developers to write fast and
distributable command line applications in an expressive way.")
      (home-page "https://github.com/davidjpeacock/cli")
      (license license:expat))))

(define-public go-github.com-jessevdk-go-flags
  (package
    (name "go-github.com-jessevdk-go-flags")
    (version "1.3.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/jessevdk/go-flags")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1jk2k2l10lwrn1r3nxdvbs0yz656830j4khzirw8p4ahs7c5zz36"))))
    (build-system go-build-system)
    (arguments
     '(#:import-path "github.com/jessevdk/go-flags"))
    (synopsis "Go library for parsing command line arguments")
    (description
     "The @code{flags} package provides a command line option parser.  The
functionality is similar to the go builtin @code{flag} package, but
@code{flags} provides more options and uses reflection to provide a succinct
way of specifying command line options.")
    (home-page "https://github.com/jessevdk/go-flags")
    (license license:bsd-3)))

(define-public go-gopkg.in-tomb.v2
  (let ((commit "d5d1b5820637886def9eef33e03a27a9f166942c")
        (revision "0"))
    (package
      (name "go-gopkg.in-tomb.v2")
      (version (string-append "0.0.0-" revision "." (string-take commit 7)))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://github.com/go-tomb/tomb.git")
                      (commit commit)))
                (file-name (string-append name "-" version ".tar.gz"))
                (sha256
                 (base32
                  "1sv15sri99szkdz1bkh0ir46w9n8prrwx5hfai13nrhkawfyfy10"))))
      (build-system go-build-system)
      (arguments
       '(#:import-path "gopkg.in/tomb.v2"))
      (synopsis "@code{tomb} handles clean goroutine tracking and termination")
      (description
       "The @code{tomb} package handles clean goroutine tracking and
termination.")
      (home-page "https://gopkg.in/tomb.v2")
      (license license:bsd-3))))

(define-public go-github.com-jtolds-gls
  (package
    (name "go-github.com-jtolds-gls")
    (version "4.2.1")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/jtolds/gls")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "1vm37pvn0k4r6d3m620swwgama63laz8hhj3pyisdhxwam4m2g1h"))))
    (build-system go-build-system)
    (arguments
     '(#:import-path "github.com/jtolds/gls"))
    (synopsis "@code{gls} provides Goroutine local storage")
    (description
     "The @code{gls} package provides a way to store a retrieve values
per-goroutine.")
    (home-page "https://github.com/jtolds/gls")
    (license license:expat)))

(define-public go-github-com-tj-docopt
  (package
    (name "go-github-com-tj-docopt")
    (version "1.0.0")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url "https://github.com/tj/docopt")
                    (commit (string-append "v" version))))
              (file-name (git-file-name name version))
              (sha256
               (base32
                "06h8hdg1mh3s78zqlr01g4si7k0f0g6pr7fj7lnvfg446hgc7080"))))
    (build-system go-build-system)
    (arguments
     '(#:import-path "github.com/tj/docopt"))
    (synopsis "Go implementation of docopt")
    (description
     "This library allows the user to define a command-line interface from a
program's help message rather than specifying it programatically with
command-line parsers.")
    (home-page "https://github.com/tj/docopt")
    (license license:expat)))

(define-public go-github-com-hashicorp-hcl
  (let ((commit "23c074d0eceb2b8a5bfdbb271ab780cde70f05a8")
        (revision "0"))
    (package
      (name "go-github-com-hashicorp-hcl")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                       (url "https://github.com/hashicorp/hcl")
                       (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                  (base32
                    "0db4lpqb5m130rmfy3s3gjjf4dxllypmyrzxv6ggqhkmwmc7w4mc"))))
      (build-system go-build-system)
      (arguments
       '(#:tests? #f
         #:import-path "github.com/hashicorp/hcl"))
      (synopsis "Go implementation of HashiCorp Configuration Language")
      (description
       "This package contains the main implementation of the @acronym{HCL,
HashiCorp Configuration Language}.  HCL is designed to be a language for
expressing configuration which is easy for both humans and machines to read.")
      (home-page "https://github.com/hashicorp/hcl")
      (license license:mpl2.0))))

(define-public go-golang-org-x-crypto-bcrypt
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-bcrypt")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/bcrypt"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Bcrypt in Go")
      (description "This package provides a Go implementation of the bcrypt
password hashing function.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-blowfish
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-blowfish")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/blowfish"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Blowfish in Go")
      (description "This package provides a Go implementation of the Blowfish
symmetric-key block cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-pbkdf2
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-pbkdf2")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/pbkdf2"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "PBKDF2 in Go")
      (description "This package provides a Go implementation of the PBKDF2 key
derivation function.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-tea
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-tea")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/tea"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Tiny Encryption Algorithm (TEA) in Go")
      (description "This packages a Go implementation of the Tiny Encryption
Algorithm (TEA) block cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-salsa20
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-salsa20")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/salsa20"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Salsa20 in Go")
      (description "This packages provides a Go implementation of the Salsa20
stream cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-cast5
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-cast5")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/cast5"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Cast5 in Go")
      (description "This packages provides a Go implementation of the Cast5
symmetric-key block cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-twofish
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-twofish")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/twofish"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "Twofish in Go")
      (description "This packages provides a Go implementation of the Twofish
symmetric-key block cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-crypto-xtea
  (let ((commit "95a4943f35d008beabde8c11e5075a1b714e6419")
        (revision "1"))
    (package
      (name "go-golang-org-x-crypto-xtea")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/crypto")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-crypto-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "0bkm0jx9mxmi1liabb9c04kf765n7d0062zdp3zmvzyamsq00lcx"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/crypto/xtea"
         #:unpack-path "golang.org/x/crypto"
         #:phases
         (modify-phases %standard-phases
           (add-before 'reset-gzip-timestamps 'make-gzip-archive-writable
             (lambda* (#:key outputs #:allow-other-keys)
               (map (lambda (file)
                      (make-file-writable file))
                    (find-files
                      (string-append (assoc-ref outputs "out")
                                     "/src/golang.org/x/crypto/ed25519/testdata")
                      ".*\\.gz$"))
               #t)))))
      (synopsis "eXtended Tiny Encryption Algorithm (XTEA) in Go")
      (description "This package provides a Go implementation of the eXtended
Tiny Encryption Algorithm (XTEA) block cipher.")
      (home-page "https://go.googlesource.com/crypto/")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-ipv4
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-ipv4")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/ipv4"
         #:unpack-path "golang.org/x/net"))
      (synopsis "Go IPv4 support")
      (description "This package provides @code{ipv4}, which implements IP-level
socket options for the Internet Protocol version 4.")
      (home-page "https://go.googlesource.com/net")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-bpf
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-bpf")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-net-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/bpf"
         #:unpack-path "golang.org/x/net"))
      (synopsis "Berkeley Packet Filters (BPF) in Go")
      (description "This packages provides a Go implementation of the Berkeley
Packet Filter (BPF) virtual machine.")
      (home-page "https://go.googlesource.com/net/")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-context
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-context")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-net-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/context"
         #:unpack-path "golang.org/x/net"))
      (synopsis "Golang Context type")
      (description "This packages provides @code{context}, which defines the
Context type, which carries deadlines, cancelation signals, and other
request-scoped values across API boundaries and between processes.")
      (home-page "https://go.googlesource.com/net/")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-internal-iana
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-internal-iana")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-net-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/internal/iana"
         #:unpack-path "golang.org/x/net"))
      (synopsis "Go support for assigned numbers (IANA)")
      (description "This packages provides @code{iana}, which provides protocol
number resources managed by the Internet Assigned Numbers Authority (IANA).")
      (home-page "https://go.googlesource.com/net/")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-ipv6
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-ipv6")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-net-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/ipv6"
         #:unpack-path "golang.org/x/net"))
      (synopsis "Go IPv6 support")
      (description "This packages provides @code{ipv6}, which implements
IP-level socket options for the Internet Protocol version 6.")
      (home-page "https://go.googlesource.com/net")
      (license license:bsd-3))))

(define-public go-golang-org-x-net-proxy
  (let ((commit "d866cfc389cec985d6fda2859936a575a55a3ab6")
        (revision "1"))
    (package
      (name "go-golang-org-x-net-proxy")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/net")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-net-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "10iahqcsiih5hgmqw8yfgv5b3fimfwl1skxg5062avcjjks59f03"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/net/proxy"
         #:unpack-path "golang.org/x/net/"))
      (synopsis "Go support for network proxies")
      (description "This packages provides @code{proxy}, which provides support
for a variety of protocols to proxy network data.")
      (home-page "https://go.googlesource.com/net")
      (license license:bsd-3))))

(define-public go-golang-org-x-sys-unix
  (let ((commit "83801418e1b59fb1880e363299581ee543af32ca")
        (revision "1"))
    (package
      (name "go-golang-org-x-sys-unix")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/sys")
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "0ilykaanvnzb27d42kmbr4i37hcn7hgqbx98z945gy63aa8dskji"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/sys/unix"
         #:unpack-path "golang.org/x/sys"
         #:phases
         (modify-phases %standard-phases
           (add-after 'unpack 'patch-tests
             (lambda _
               (pk (getcwd))
               (substitute* "src/golang.org/x/sys/unix/syscall_unix_test.go"
                 (("/usr/bin") "/tmp"))
               #t)))))
      (synopsis "Go support for low-level system interaction")
      (description "This package provides @code{unix}, which offers Go support
for low-level interaction with the operating system.")
      (home-page "https://go.googlesource.com/sys")
      (license license:bsd-3))))

(define-public go-golang-org-x-text-transform
  (let ((commit "e19ae1496984b1c655b8044a65c0300a3c878dd3")
        (revision "1"))
    (package
      (name "go-golang-org-x-text-transform")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/text")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-text-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "1cvnnx8nwx5c7gr6ajs7sldhbqh52n7h6fsa3i21l2lhx6xrsh4w"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/text/transform"
         #:unpack-path "golang.org/x/text"))
      (synopsis "Go text transformation")
      (description "This package provides @code{transform}, which provides
reader and writer wrappers that transform the bytes passing through.  Example
transformations provided by other packages include normalization and conversion
between character sets.")
      (home-page "https://go.googlesource.com/text")
      (license license:bsd-3))))

(define-public go-golang-org-x-text-unicode-norm
  (let ((commit "e19ae1496984b1c655b8044a65c0300a3c878dd3")
        (revision "1"))
    (package
      (name "go-golang-org-x-text-unicode-norm")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/text")
                      (commit commit)))
                (file-name (string-append "go.googlesource.com-text-"
                                          version "-checkout"))
                (sha256
                 (base32
                  "1cvnnx8nwx5c7gr6ajs7sldhbqh52n7h6fsa3i21l2lhx6xrsh4w"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/text/unicode/norm"
         #:unpack-path "golang.org/x/text"))
      (synopsis "Unicode normalization in Go")
      (description "This package provides @code{norm}, which contains types and
functions for normalizing Unicode strings.")
      (home-page "https://go.googlesource.com/text")
      (license license:bsd-3))))

(define-public go-golang-org-x-time-rate
  (let ((commit "6dc17368e09b0e8634d71cac8168d853e869a0c7")
        (revision "1"))
    (package
      (name "go-golang-org-x-time-rate")
      (version (git-version "0.0.0" revision commit))
      (source (origin
                (method git-fetch)
                (uri (git-reference
                      (url "https://go.googlesource.com/time")
                      (commit commit)))
                (file-name (git-file-name name version))
                (sha256
                 (base32
                  "1fx4cf5fpdz00g3c7vxzy92hdcg0vh4yqw00qp5s52j72qixynbk"))))
      (build-system go-build-system)
      (arguments
       `(#:import-path "golang.org/x/time/rate"
         #:unpack-path "golang.org/x/time"))
      (propagated-inputs
       `(("go-golang-org-x-net-context" ,go-golang-org-x-net-context)))
      (synopsis "Rate limiting in Go")
      (description "This package provides @{rate}, which implements rate
limiting in Go.")
      (home-page "https://godoc.org/golang.org/x/time/rate")
      (license license:bsd-3))))