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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 Federico Beffa <beffa@fbengineering.ch>
;;;
;;; 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 (guix import hackage)
#:use-module (ice-9 match)
#:use-module (ice-9 regex)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 receive)
#:use-module (ice-9 pretty-print)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-1)
#:use-module ((guix download) #:select (download-to-store))
#:use-module ((guix utils) #:select (package-name->name+version))
#:use-module (guix import utils)
#:use-module (guix store)
#:use-module (guix hash)
#:use-module (guix base32)
#:use-module ((guix utils) #:select (call-with-temporary-output-file))
#:export (hackage->guix-package))
;; Part 1:
;;
;; Functions used to read a cabal file and do some pre-processing: discarding
;; comments and empty lines.
;; List of libraries distributed with ghc (7.8.4).
(define ghc-standard-libraries
'("haskell98" ; 2.0.0.3
"hoopl" ; 3.10.0.1
"base"
"transformers" ; 0.3.0.0
"deepseq" ; 1.3.0.2
"array" ; 0.5.0.0
"binary" ; 0.7.1.0
"bytestring" ; 0.10.4.0
"containers" ; 0.5.5.1
"time" ; 1.4.2
"Cabal" ; 1.18.1.5 (but not "cabal-install")
"bin-package-db" ; 0.0.0.0
"ghc-prim"
"integer-gmp"
"Win32" ; 2.3.0.2
"template-haskell"
"process" ; 1.2.0.0
"haskeline" ; 0.7.1.2
"terminfo" ; 0.4.0.0
"directory" ; 1.2.1.0
"filepath" ; 1.3.0.2
"old-locale" ; 1.0.0.6
"unix" ; 2.7.0.1
"old-time" ; 1.1.0.2
"pretty" ; 1.1.1.1
"xhtml" ; 3000.2.1
"hpc")) ; 0.6.0.1
;; Libraries present in the "Haskell Platform" 2014.2.0 and not included in
;; the GHC standard libraries:
;;
;; "zlib" ; 0.5.4.1
;; "async" ; 2.0.1.5
;; "stm" ; 2.4.2
;; "mtl" ; 2.1.3.1
;; "primitive" ; 0.5.2.1
;; "parallel" ; 3.2.0.4
;; "attoparsec" ; 0.10.4.0
;; "case-insensitive" ; 1.1.0.3
;; "syb" ; 0.4.1
;; "containers" ; 0.5.5.1
;; "fgl" ; 5.5.0.1
;; "unordered-containers" ; 0.2.3.3
;; "hashable" ; 1.2.1.0
;; "split" ; 0.2.2
;; "text" ; 1.1.0.0
;; "vector" ; 0.10.9.1
;; "GLURaw" ; 1.4.0.1
;; "OpenGL" ; 2.9.2.0
;; "OpenGLRaw" ; 1.5.0.0
;; "GLUT" ; 2.5.1.1
;; "haskell-src" ; 1.0.1.6
;; "network" ; 2.4.2.2
;; "HTTP" ; 4000.2.10
;; "random" ; 1.0.1.1
;; "HUnit" ; 1.2.5.2
;; "QuickCheck" ; 2.6
;; "html" ; 1.0.1.2
;; "parsec" ; 3.1.5
;; "regex-compat" ; 0.95.1
;; "regex-base" ; 0.93.2
;; "regex-posix" ; 0.95.2
(define guix-name-prefix "haskell-")
;; Regular expression matching "key: value"
(define key-value-rx
"([a-zA-Z0-9-]+): *(\\w?.*)$")
;; Regular expression matching a section "head sub-head ..."
(define sections-rx
"([a-zA-Z0-9\\(\\)-]+)")
;; Cabal comment.
(define comment-rx
"^ *--")
;; Check if the current line includes a key
(define (has-key? line)
(string-match key-value-rx line))
(define (comment-line? line)
(string-match comment-rx line))
;; returns the number of indentation spaces and the rest of the line.
(define (line-indentation+rest line)
(let loop ((line-lst (string->list line))
(count 0))
(if (or (null? line-lst) (not (eqv? (first line-lst) #\space)))
(values count (list->string line-lst))
(loop (cdr line-lst) (+ count 1)))))
;; Part 1 main function: read a cabal fila and filter empty lines and comments.
;; Returns a list composed by the pre-processed lines of the file.
(define (read-cabal port)
(let loop ((line (read-line port))
(result '()))
(cond
((eof-object? line)
(reverse result))
((or (string-null? line) (comment-line? line))
(loop (read-line port) result))
(else
(loop (read-line port) (cons line result))))))
;; Part 2:
;;
;; Take the result of part 1 and convert the content of the file in a list of
;; list pairs, where the first list of the pair includes keys while the second
;; is a list of values.
;; Function to read a value split across multiple lines. LINES are the
;; remaining input lines to be read. SEED is the value read on the same line
;; as the key. Returns two values: (VALUES values-lst remaining-lines)
(define (multi-line-value lines seed)
(if (null? lines)
(values '() '())
(let-values (((current-indent value) (line-indentation+rest (first lines)))
((next-line-indent next-line-value)
(if (null? (cdr lines))
(values #f "")
(line-indentation+rest (second lines)))))
(if (or (not next-line-indent) (< next-line-indent current-indent)
(regexp-exec condition-rx next-line-value))
(values (reverse (cons value seed)) (cdr lines))
(multi-line-value (cdr lines) (cons value seed))))))
;; Parses a cabal file in the form of a list of lines as produced by
;; READ-CABAL and returns its content in the following form:
;;
;; (((head1 sub-head1 ... key1) (value))
;; ((head2 sub-head2 ... key2) (value2))
;; ...).
;;
;; where all elements are strings.
;;
;; We try do deduce the format from the following document:
;; https://www.haskell.org/cabal/users-guide/developing-packages.html
;;
;; Key values are case-insensitive. We therefore lowercase them. Values are
;; case-sensitive.
;;
;; Currently only only layout structured files are parsed. Braces {}
;; structured files are not handled.
(define (cabal->key-values lines)
(let loop
((lines lines)
(indents '()) ; only includes indents at start of section heads.
(sections '())
(result '()))
(let-values
(((current-indent line)
(if (null? lines)
(values 0 "")
(line-indentation+rest (first lines))))
((next-line-indent next-line)
(if (or (null? lines) (null? (cdr lines)))
(values 0 "")
(line-indentation+rest (second lines)))))
(if (null? lines)
(reverse result)
(let ((rx-result (has-key? line)))
(cond
(rx-result
(let ((key (string-downcase (match:substring rx-result 1)))
(value (match:substring rx-result 2)))
(cond
;; Simple single line "key: value".
((= next-line-indent current-indent)
(loop (cdr lines) indents sections
(cons
(list (reverse (cons key sections)) (list value))
result)))
;; Multi line "key: value\n value cont...".
((> next-line-indent current-indent)
(let*-values (((value-lst lines)
(multi-line-value (cdr lines)
(if (string-null? value)
'()
`(,value)))))
;; multi-line-value returns to the first line after the
;; multi-value.
(loop lines indents sections
(cons
(list (reverse (cons key sections)) value-lst)
result))))
;; Section ended.
(else
;; Indentation is reduced. Check by how many levels.
(let*-values (((idx) (+ (list-index
(lambda (x) (= next-line-indent x))
indents)
(if (has-key? next-line) 1 0)))
((_ sec) (split-at sections idx))
((_ ind) (split-at indents idx)))
(loop (cdr lines) ind sec
(cons
(list (reverse (cons key sections)) (list value))
result)))))))
;; Start of a new section.
((or (null? indents)
(> current-indent (first indents)))
(loop (cdr lines) (cons current-indent indents)
(cons (string-downcase line) sections) result))
(else
(loop (cdr lines) indents
(cons (string-downcase line) (cdr sections))
result))))))))
;; Find if a string represent a conditional
(define condition-rx
(make-regexp "^if +(.*)$"))
;; Split sections in individual words with exception for the predicate of an
;; 'if' conditional.
(define (split-section section)
(let ((rx-result (regexp-exec condition-rx section)))
(if rx-result
`("if" ,(match:substring rx-result 1))
(map match:substring (list-matches sections-rx section)))))
(define (join-sections sec1 sec2)
(fold-right cons sec2 sec1))
(define (pre-process-keys key)
(match key
(() '())
((sec1 rest ...)
(join-sections (split-section sec1) (pre-process-keys rest)))))
(define (pre-process-entry-keys entry)
(match entry
((key value)
(list (pre-process-keys key) value))
(() '())))
;; Split all strings included in the list of keys into individual words, with
;; exception for 'if' predicates. Returns an entry with the key list composed
;; by single words. This is used to read flags.
(define (pre-process-entries-keys entries)
(match entries
((entry rest ...)
(cons (pre-process-entry-keys entry)
(pre-process-entries-keys rest)))
(()
'())))
;; Read flags and returns an alist where each pair is composed by the name of
;; a flag and its value: "True" or "False".
(define (get-flags pre-processed-entries)
(match pre-processed-entries
(() '())
(((("flag" flag-name "default") (flag-val)) rest ...)
(cons (cons flag-name flag-val)
(get-flags rest)))
((entry rest ... )
(get-flags rest))
(_ #f)))
;; Part 3:
;;
;; So far we did read the cabal file and extracted flags information. Now we
;; need to evaluate the conditions and process the entries accordingly.
;; Cabal test keywords
(define tests-rx
(make-regexp "(os|arch|flag|impl)\\(([a-zA-Z0-9_-]+)\\)"))
;; Parentheses within conditions
(define parens-rx
(make-regexp "\\((.+)\\)"))
;; OR operator in conditions
(define or-rx
(make-regexp " +\\|\\| +"))
;; AND operator in conditions
(define and-rx
(make-regexp " +&& +"))
;; NOT operator in conditions
(define not-rx
(make-regexp "^!.+"))
;; Returns a list with the arguments of (logic) bianry operators. MATCH-LST
;; is the result of "list-match" against a binary operator regexp.
(define (bi-op-args str match-lst)
(let ((operators (length match-lst)))
(map (lambda (from to)
(substring str from to))
(cons 0 (map match:end match-lst))
(append (map match:start match-lst) (list (string-length str))))))
;; If there is a single argument there is no binary operation to perform. We
;; just return the argument. Takes a list as produced by
;; "bi-op-argsf". Returns a string.
(define (bi-op->sexp-like bi-op args)
(if (= (length args) 1)
(first args)
(string-append "(" bi-op
(fold (lambda (arg seed) (string-append seed " " arg))
"" args) ")")))
;; Takes a string and checks for negation symbol.
(define (not->sexp-like arg)
(if (regexp-exec not-rx arg)
(string-append "(not "
(substring arg 1 (string-length arg))
")")
arg))
;; Convert a CABAL conditional string into a string with equivalent SCHEME
;; syntax. This procedure accepts only simple conditionals without
;; parentheses.
(define (parens-less-cond->sexp-like conditional)
;; The outher operation is the one with the lowest priority: OR
(bi-op->sexp-like
"or"
;; each OR argument may be an AND operation
(map (lambda (or-arg)
(let ((m-lst (list-matches and-rx or-arg)))
;; is there an AND operation?
(if (> (length m-lst) 0)
(bi-op->sexp-like
"and"
;; expand NOT operators when there are ANDs
(map not->sexp-like (bi-op-args or-arg m-lst)))
;; ... and when there aren't.
(not->sexp-like or-arg))))
;; list of OR arguments
(bi-op-args conditional (list-matches or-rx conditional)))))
(define test-keyword-ornament "§§")
;; Convert a CABAL conditional string into a string with equivalent SCHEME
;; syntax.
(define (conditional->sexp-like conditional)
;; First we substitute TEST-KEYWORD-ORNAMENT for parentheses around tests
;; keywords so that parentheses are only used to set precedences. This
;; substantially simplify parsing.
(let ((conditional
(regexp-substitute/global #f tests-rx conditional
'pre 1 test-keyword-ornament 2
test-keyword-ornament 'post)))
(let loop ((sub-cond conditional))
(let ((rx-result (regexp-exec parens-rx sub-cond)))
(cond
(rx-result
(parens-less-cond->sexp-like
(string-append
(match:prefix rx-result)
(loop (match:substring rx-result 1))
(match:suffix rx-result))))
(else
(parens-less-cond->sexp-like sub-cond)))))))
;; Substitute SCHEME #t or #f according to the value of flags. (Default to
;; "True")
(define (eval-flags sexp-like-cond flags)
(fold-right
(lambda (flag sexp)
(match flag
((name . value)
(let ((rx (make-regexp
(string-append "flag" test-keyword-ornament name
test-keyword-ornament))))
(regexp-substitute/global
#f rx sexp
'pre (if (string-ci= value "False") "#f" "#t") 'post)))
(_ sexp)))
sexp-like-cond
(cons '("[a-zA-Z0-9_-]+" . "True") flags)))
;; We need to substitute test keywords "os(...)" and "arch(...)" with
;; S-expression functions that perform the check when we want to build the
;; package.
;;
;; (%current-system) returns, e.g., "x86_64-linux" or "i686-linux".
(define (eval-tests sexp-like-cond)
(with-input-from-string
(fold-right
(lambda (test sexp)
(match test
((type pre-match post-match)
(let ((rx (make-regexp
(string-append type test-keyword-ornament "(\\w+)"
test-keyword-ornament))))
(regexp-substitute/global
#f rx sexp
'pre pre-match 2 post-match 'post)))
(_ sexp)))
sexp-like-cond
'(("(os|arch)" "(string-match \"" "\" (%current-system))")))
read))
;; We check for the cabal test "impl(...)". Assume the module declaring the
;; generated package includes a local variable called "haskell-implementation"
;; with a value of the form NAME-VERSION against which we compare.
(define (eval-impl sexp-like-cond)
(with-output-to-string
(lambda ()
(write
(with-input-from-string
(fold-right
(lambda (test sexp)
(match test
((pre-match post-match)
(let ((rx-with-version
(make-regexp
(string-append
"impl" test-keyword-ornament
"([a-zA-Z0-9_-]+) *([<>=]+) *([0-9.]+) *"
test-keyword-ornament)))
(rx-without-version
(make-regexp
(string-append "impl" test-keyword-ornament "(\\w+)"
test-keyword-ornament))))
(if (regexp-exec rx-with-version sexp)
(regexp-substitute/global
#f rx-with-version sexp
'pre pre-match 2 " \"" 1 "-" 3 "\" " post-match 'post)
(regexp-substitute/global
#f rx-without-version sexp
'pre pre-match "-match \"" 1 "\" " post-match 'post))))
(_ sexp)))
sexp-like-cond
'(("(string" "haskell-implementation)")))
read)))))
;; META is the result of "cabal->key-values". Returns the list associated with
;; a specific KEY. Since the value can be a list (as for "description"), we
;; always return a list.
(define (key->values meta key)
(match meta
(() '())
(((((? (lambda(x) (equal? x key)))) v) r ...)
v)
(((k v) r ...)
(key->values (cdr meta) key))
(_ "key Not fount")))
;; Returns all entries with a key starting with key-start and ending with
;; key-end as in (key-start ... key-end).
(define (key-start-end->entries meta key-start key-end)
(let ((pred
(lambda (x)
(equal? (list key-start key-end) (list (first x) (last x))))))
(match meta
(() '())
((((? pred k) v) r ...)
(cons `(,k ,v) (key-start-end->entries (cdr meta) key-start key-end)))
(((k v) r ...)
(key-start-end->entries (cdr meta) key-start key-end))
(_ "key Not fount"))))
(define else-rx
(make-regexp "^else$"))
(define (count-if-else rx-result-ls)
(apply + (map (lambda (m) (if m 1 0)) rx-result-ls)))
(define (analyze-entry-cond entry)
(let* ((keys (first entry))
(vals (second entry))
(rx-cond-result
(map (cut regexp-exec condition-rx <>) keys))
(rx-else-result
(map (cut regexp-exec else-rx <>) keys))
(cond-no (count-if-else rx-cond-result))
(else-no (count-if-else rx-else-result))
(cond-idx (list-index (lambda (rx) (if rx #t #f)) rx-cond-result))
(else-idx (list-index (lambda (rx) (if rx #t #f)) rx-else-result))
(key-cond
(cond
((or (and cond-idx else-idx (< cond-idx else-idx))
(and cond-idx (not else-idx)))
(match:substring
(receive (head tail)
(split-at rx-cond-result cond-idx) (first tail))))
((or (and cond-idx else-idx (> cond-idx else-idx))
(and (not cond-idx) else-idx))
(match:substring
(receive (head tail)
(split-at rx-else-result else-idx) (first tail))))
(else
""))))
(values keys vals rx-cond-result
rx-else-result cond-no else-no key-cond)))
(define (remove-cond entry cond)
(match entry
((k v)
(list (cdr (member cond k)) v))))
(define (group-and-reduce-level entries group group-cond)
(let loop
((true-group group)
(false-group '())
(entries entries))
(if (null? entries)
(values (reverse true-group) (reverse false-group) entries)
(let*-values (((entry) (first entries))
((keys vals rx-cond-result rx-else-result
cond-no else-no key-cond)
(analyze-entry-cond entry)))
(cond
((and (>= (+ cond-no else-no) 1) (string= group-cond key-cond))
(loop (cons (remove-cond entry group-cond) true-group) false-group
(cdr entries)))
((and (>= (+ cond-no else-no) 1) (string= key-cond "else"))
(loop true-group (cons (remove-cond entry "else") false-group)
(cdr entries)))
(else
(values (reverse true-group) (reverse false-group) entries)))))))
(define dependencies-rx
(make-regexp "([a-zA-Z0-9_-]+) *[^,]*,?"))
(define (guix-name name)
(if (string-prefix? guix-name-prefix name)
(string-downcase name)
(string-append guix-name-prefix (string-downcase name))))
;; Split the comma separated list of dependencies coming from the cabal file
;; and return a list with inputs suitable for the GUIX package. Currently the
;; version information is discarded.
(define (split-dependencies ls)
(define (split-at-comma d)
(map
(lambda (m)
(let ((name (guix-name (match:substring m 1))))
(list name (list 'unquote (string->symbol name)))))
(list-matches dependencies-rx d)))
(fold (lambda (d p) (append (split-at-comma d) p)) '() ls))
;; Genrate an S-expression containing the list of dependencies. The generated
;; S-expressions may include conditionals as defined in the cabal file.
;; During this process we discard the version information of the packages.
(define (dependencies-cond->sexp meta)
(define (take-dependencies meta)
(let ((key-start-exe "executable cabal")
(key-start-lib "library")
(key-end "build-depends"))
(append
(key-start-end->entries meta key-start-exe key-end)
(key-start-end->entries meta key-start-lib key-end))))
(let ((flags (get-flags (pre-process-entries-keys meta))))
(delete-duplicates
(let loop ((entries (take-dependencies meta))
(result '()))
(if (null? entries)
result
(let*-values (((entry) (first entries))
((keys vals rx-cond-result rx-else-result
cond-no else-no key-cond)
(analyze-entry-cond entry)))
(cond
((= (+ cond-no else-no) 0)
(loop (cdr entries) (append (split-dependencies vals) result)))
(else
(let-values (((true-group false-group entries)
(group-and-reduce-level entries '()
key-cond))
((cond-final) (eval-tests
(eval-impl
(eval-flags
(conditional->sexp-like
(last (split-section key-cond)))
flags)))))
(loop entries
(cond
((or (eq? cond-final #t) (equal? cond-final '(not #f)))
(append (loop true-group '()) result))
((or (eq? cond-final #f) (equal? cond-final '(not #t)))
(append (loop false-group '()) result))
(else
(cons `(unquote-splicing
(if ,cond-final
,(loop true-group '())
,(loop false-group '())))
result)))))))))))))
;; Filter the libraries already included in the Haskell compiler standard
;; libraries. Currently we imply the use of GHC.
(define (filter-standard-libraries ls)
(let ((real-name-rx (make-regexp
(string-append guix-name-prefix "(\\w+)"))))
(fold (lambda (elem seed)
(if (eq? (first elem) 'unquote-splicing)
(let*-values (((group-cond true-group false-group)
(match (second elem)
((if c t f )
(values c t f))
(_ (values c '() '()))))
((filtered-true-group)
(filter-standard-libraries true-group))
((filtered-false-group)
(filter-standard-libraries false-group)))
(cond
((and (null? filtered-false-group)
(null? filtered-true-group))
seed)
((null? filtered-false-group)
(cons (list 'unquote-splicing
(list 'if group-cond
filtered-true-group))
seed))
(else
(cons (list 'unquote-splicing
(list 'if group-cond
filtered-true-group
filtered-false-group))
seed))))
(let ((rx-result (regexp-exec real-name-rx (first elem))))
(match (match:substring rx-result 1)
((? (cut member <>
;; GUIX names are all lower-case.
(map (cut string-downcase <>)
ghc-standard-libraries)))
seed)
(_
(cons elem seed))))))
'() ls)))
;; Part 4:
;;
;; Retrive the desired package and its cabal file from
;; http://hackage.haskell.org and construct the GUIX package S-expression.
(define (hackage-fetch name-version)
"Return the cabal file for the package NAME-VERSION, or #f on failure. If
the version part is omitted from the package name, then return the latest
version."
(let*-values (((name version) (package-name->name+version name-version))
((url)
(if version
(string-append "http://hackage.haskell.org/package/"
name "-" version "/" name ".cabal")
(string-append "http://hackage.haskell.org/package/"
name "/" name ".cabal")))
((cabal)
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch url temp)
(call-with-input-file temp read-cabal))))))
(and=> cabal cabal->key-values)))
;; List of valid values from
;; https://www.haskell.org
;; /cabal/release/cabal-latest/doc/API/Cabal/Distribution-License.html.
(define string->license
(match-lambda
("GPL-2" 'gpl2)
("GPL-3" 'gpl3)
("GPL" "'gpl??")
("AGPL-3" 'agpl3)
("AGPL" "'agpl??")
("LGPL-2.1" 'lgpl2.1)
("LGPL-3" 'lgpl3)
("LGPL" "'lgpl??")
("BSD2" 'bsd-2)
("BSD3" 'bsd-3)
("MIT" 'expat)
("ISC" 'isc)
("MPL" 'mpl2.0)
("Apache-2.0" 'asl2.0)
((x) (string->license x))
((lst ...) `(list ,@(map string->license lst)))
(_ #f)))
(define (hackage-module->sexp meta)
"Return the `package' s-expression for a cabal package from the metadata in
META."
(define name
(first (key->values meta "name")))
(define version
(first (key->values meta "version")))
(define description
(let*-values (((description) (key->values meta "description"))
((lines last)
(split-at description (- (length description) 1))))
(fold-right (lambda (line seed) (string-append line "\n" seed))
(first last) lines)))
(define source-url
(string-append "http://hackage.haskell.org/package/" name
"/" name "-" version ".tar.gz"))
(define (maybe-inputs guix-name inputs)
(match (filter-standard-libraries inputs)
(()
'())
((inputs ...)
(list (list guix-name
(list 'quasiquote inputs))))))
(let ((tarball (with-store store
(download-to-store store source-url))))
`(package
(name ,(guix-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (string-append ,@(factorize-uri source-url version)))
(sha256
(base32
,(bytevector->nix-base32-string (file-sha256 tarball))))))
(build-system haskell-build-system)
,@(maybe-inputs 'inputs (dependencies-cond->sexp meta))
(home-page ,@(key->values meta "homepage"))
(synopsis ,@(key->values meta "synopsis"))
(description ,description)
(license ,(string->license (key->values meta "license"))))))
(define (hackage->guix-package module-name)
"Fetch the cabal file for PACKAGE-NAME from hackage.haskell.org, and return
the `package' s-expression corresponding to that package, or #f on failure."
(let ((module-meta (hackage-fetch module-name)))
(and=> module-meta hackage-module->sexp)))
;; Part 5:
;;
;; Some variables used to test the varisous functions.
(define test-1
'("head 1"
" kh1: vh1"
" kh2: vh2"
"name: mtl"))
(define test-2
'("head 1"
" subh 1"
" kh1: vh1"
" kh2: vh2"
"name: mtl"))
(define test-3
'("head 1"
" subh 1"
" kh1: vh1"
" subh 2"
" kh2: vh2"
" kh3: vh3"
"name: mtl"))
(define test-4
'("Library"
" Build-Depends: basee"
" Exposed-Modules: Testing.Test1"
" Extensions: CPP"
" if flag(debug)"
" GHC-Options: -DDEBUG"
" if !os(windows)"
" CC-Options: \"-DDEBUG\""
" else"
" CC-Options: \"-DNDEBUG else\""
" if flag(webfrontend)"
" Build-Depends: cgi > 0.42"
" Other-Modules: Testing.WebStuff"))
(define test-5
'("Flag Debug"
" Description: Enable debug support"
" Default: False"
"Library"
" Build-Depends: base"
" if flag(debug)"
" GHC-Options: -DDEBUG"
" if !os(windows)"
" CC-Options: \"-DDEBUG\""
" else"
" CC-Options: \"-DNDEBUG\""))
(define test-6
'("Flag Debug"
" Description: Enable debug support"
" Default: False"
"Flag Cips"
" Description: This is a journey into the sound..."
" Default: True"
"if flag(debug)"
" GHC-Options: -DDEBUG"
" if !os(windows)"
" CC-Options: \"-DDEBUG\""
" else"
" CC-Options: \"-DNDEBUG\""))
(define test-7
'("executable cabal"
" main-is: Main.hs"
" build-depends:"
" array >= 0.1 && < 0.6,"
" base >= 4.3 && < 5"
" if flag(old-directory)"
" build-depends: directory >= 1 && < 1.2, old-time >= 1 && < 1.2,"
" process >= 1.0.1.1 && < 1.1.0.2"
" else"
" build-depends: directory >= 1.2 && < 1.3,"
" process >= 1.1.0.2 && < 1.3"
" if flag(network-uri)"
" build-depends: network-uri >= 2.6, network >= 2.6"
" else"
" build-depends: network >= 2.4 && < 2.6"
" if os(windows)"
" build-depends: Win32 >= 2 && < 3"
" cpp-options: -DWIN32"
" else"
" build-depends: unix >= 2.0 && < 2.8"))
(define test-dep-1
'((("executable cabal" "build-depends")
("array >= 0.1"))
(("executable cabal" "build-depends")
("fbe >= 0.2"))))
(define test-dep-2
'((("executable cabal" "if flag(cips)" "build-depends")
("fbe >= 0.2"))))
(define test-dep-3
'((("executable cabal" "if flag(cips)" "build-depends")
("fbe >= 0.2"))
(("executable cabal" "else" "build-depends")
("fbeee >= 0.3"))
))
(define test-dep-4
'((("executable cabal" "if flag(a)" "if flag(b)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if flag(a)" "else" "build-depends")
("fbeeeee >= 0.3"))
(("executable cabal" "build-depends")
("network >= 0.1"))
))
(define test-dep-5
'((("executable cabal" "if flag(a)" "if flag(b)" "build-depends")
("fbe >= 0.2"))
(("executable cabal" "if flag(a)" "else" "build-depends")
("fbe >= 0.3"))
(("executable cabal" "else" "build-depends")
("fbe >= 0.4"))
))
(define test-dep-6
'((("executable cabal" "if flag(a)" "if flag(b)" "build-depends")
("fbe >= 0.2"))
(("executable cabal" "if flag(a)" "else" "build-depends")
("fbe >= 0.3"))
(("executable cabal" "else" "build-depends")
("fbe >= 0.4"))
(("executable cabal" "build-depends")
("array >= 0.1"))
))
(define test-dep-10
'((("executable cabal" "build-depends")
("array >= 0.1 && < 0.6," "base >= 4.3 && < 5"))
(("executable cabal" "if flag(old-directory)" "build-depends")
("directory >= 1 && < 1.2," "process >= 1.0.1.1 && < 1.1.0.2"))
(("executable cabal" "else" "build-depends")
("directory >= 1.2 && < 1.3," "process >= 1.1.0.2 && < 1.3"))
(("executable cabal" "if flag(network-uri)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "else" "build-depends")
("network >= 2.4 && < 2.6"))
(("executable cabal" "if os(windows)" "build-depends")
("Win32 >= 2 && < 3"))
(("executable cabal" "else" "build-depends")
("unix >= 2.0 && < 2.8"))))
(define test-dep-10a
'((("executable cabal" "build-depends")
("array >= 0.1 && < 0.6," "base >= 4.3 && < 5"))
(("executable cabal" "if flag(old-directory)" "build-depends")
("directory >= 1 && < 1.2, old-time >= 1 && < 1.2"))
(("executable cabal" "else" "build-depends")
("directory >= 1.2 && < 1.3," "process >= 1.1.0.2 && < 1.3"))
(("executable cabal" "if flag(network-uri)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "else" "build-depends")
("network >= 2.4 && < 2.6"))
(("executable cabal" "if os(windows)" "build-depends")
("Win32 >= 2 && < 3"))
(("executable cabal" "else" "build-depends")
("unix >= 2.0 && < 2.8"))))
(define test-dep-11
'((("executable cabal" "if flag(old-directory)" "if flag(network-uri)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if flag(old-directory)" "if flag(network-uri)" "if flag(cips)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if flag(old-directory)" "else" "build-depends")
("network >= 2.4 && < 2.6"))
(("executable cabal" "else" "build-depends")
("directory >= 1.2 && < 1.3," "process >= 1.1.0.2 && < 1.3"))
(("executable cabal" "else" "if flag(cips)" "build-depends")
("cip >= 1.2"))))
(define test-dep-12
'((("executable cabal" "build-depends")
("array >= 0.1 && < 0.6," "base >= 4.3 && < 5"))
(("executable cabal" "if flag(old-directory)" "build-depends")
("directory >= 1 && < 1.2," "process >= 1.0.1.1 && < 1.1.0.2"))
(("executable cabal" "if flag(old-directory)" "if flag(network-uri)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if flag(old-directory)" "else" "build-depends")
("network >= 2.4 && < 2.6"))
(("executable cabal" "else" "build-depends")
("directory >= 1.2 && < 1.3," "process >= 1.1.0.2 && < 1.3"))))
(define test-dep-13
'((("executable cabal" "if os(linux)" "if flag(debug)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if os(linux)" "if flag(debug)" "if flag(cips)" "build-depends")
("network-uri >= 2.6, network >= 2.6"))
(("executable cabal" "if os(linux)" "else" "build-depends")
("network >= 2.4 && < 2.6"))
(("executable cabal" "else" "build-depends")
("directory >= 1.2 && < 1.3," "process >= 1.1.0.2 && < 1.3"))
(("executable cabal" "else" "if flag(cips)" "build-depends")
("cip >= 1.2"))))
(define test-cond-1
"(os(darwin) && !(arch(i386))) || os(freebsd)")
(define test-cond-2
"(os(darwin) || !(arch(i386))) && os(freebsd)")
(define test-cond-3
"os(darwin) && arch(i386) || os(freebsd)")
(define test-cond-4
"os(darwin) && !arch(i386) || !os(freebsd)")
(define test-cond-5
"os(darwin) && !arch(i386) && !os(freebsd)")
(define test-cond-6
"(os(darwin) || !(flag(debug))) && flag(cips)")
(define test-cond-7
"(os(darwin) || !(flag(debug))) && flag(cips) && flag(fbe)")
(define test-cond-8
"os(linux) && impl(ghc)")
(define test-cond-9
"os(linux) && impl(ghc <= 6.1.0)")
;; Run some tests
;; (display (cabal->key-values
;; (call-with-input-file "mtl.cabal" read-cabal)))
;; (display (cabal->key-values
;; (call-with-input-file "/home/beffa/tmp/cabal-install.cabal" read-cabal)))
;; (display (get-flags (pre-process-entries-keys (cabal->key-values test-5))))
;; (newline)
;; (display (conditional->sexp-like test-cond-2))
;; (newline)
;; (display
;; (eval-flags (conditional->sexp-like test-cond-6)
;; (get-flags (pre-process-entries-keys (cabal->key-values test-6)))))
;; (newline)
;; (key->values (cabal->key-values test-1) "name")
;; (newline)
;; (key-start-end->entries (cabal->key-values test-4) "Library" "CC-Options")
;; (newline)
;; (eval-tests (conditional->sexp-like test-cond-6))
;;
;;; cabal.scm ends here
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