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* [bug#56882] [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils
@ 2022-08-02 11:54 Maxime Devos
  2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
  2022-08-06 16:25 ` bug#56882: [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Mathieu Othacehe
  0 siblings, 2 replies; 6+ messages in thread
From: Maxime Devos @ 2022-08-02 11:54 UTC (permalink / raw)
  To: 56882


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Supporting cross-compilation of xdg-utils opens the way to trying 
cross-compilation of Qt things.

Things like XS are unsupported -- going by 
https://arsv.github.io/perl-cross/modules.html and the web page that 
states that external modules need to be copied into Perl first (but 
which I cannot find anymore), it sounds rather complicated.

Greeetings,
Maxime.


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^ permalink raw reply	[flat|nested] 6+ messages in thread

* [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages.
  2022-08-02 11:54 [bug#56882] [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Maxime Devos
@ 2022-08-02 12:13 ` Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 2/4] gnu: freedesktop: Add 'bash' input for 'wrap-program' Maxime Devos
                     ` (2 more replies)
  2022-08-06 16:25 ` bug#56882: [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Mathieu Othacehe
  1 sibling, 3 replies; 6+ messages in thread
From: Maxime Devos @ 2022-08-02 12:13 UTC (permalink / raw)
  To: 56882; +Cc: Maxime Devos

* guix/build-system/perl.scm: Add info on cross-compilation.
(lower)[private-keywords]: Remove #:target when cross-compiling.
(lower)[target]: Set.
(host-inputs)[perl]: New entry.
(host-inputs)[(standard-packages)]: Move to ...
(build-inputs)[(standard-packages)]: ... here when cross-compiling.
(build-inputs)[standard-cross-packages]: Add when cross-compiling.
(target-inputs): New entry when cross-compiling.
(build): Use perl-cross-build when cross-compiling.
(perl-cross-build): New procedure.
---
 guix/build-system/perl.scm | 120 +++++++++++++++++++++++++++++++------
 1 file changed, 103 insertions(+), 17 deletions(-)

diff --git a/guix/build-system/perl.scm b/guix/build-system/perl.scm
index db0a916fb2..3890cd91ea 100644
--- a/guix/build-system/perl.scm
+++ b/guix/build-system/perl.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2014, 2015, 2021 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2022 Maxime Devos <maximedevos@telenet.be>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -29,13 +30,17 @@ (define-module (guix build-system perl)
   #:use-module (ice-9 match)
   #:export (%perl-build-system-modules
             perl-build
+            perl-cross-build
             perl-build-system))
 
 ;; Commentary:
 ;;
 ;; Standard build procedure for Perl packages using the "makefile
 ;; maker"---i.e., "perl Makefile.PL".  This is implemented as an extension of
-;; `gnu-build-system'.
+;; `gnu-build-system'.  Cross-compilation is supported for some simple Perl
+;; packages, but not for any Perl packages that do things like XS (Perl's FFI),
+;; which makes C-style shared libraries, as it is currently not known how to
+;; tell Perl to properly cross-compile.
 ;;
 ;; Code:
 
@@ -59,24 +64,43 @@ (define* (lower name
                 #:rest arguments)
   "Return a bag for NAME."
   (define private-keywords
-    '(#:target #:perl #:inputs #:native-inputs))
+    `(#:perl #:inputs #:native-inputs
+      ,@(if target '() '(#:target))))
 
-  (and (not target)                               ;XXX: no cross-compilation
-       (bag
-         (name name)
-         (system system)
-         (host-inputs `(,@(if source
-                              `(("source" ,source))
-                              '())
-                        ,@inputs
+  (bag
+    (name name)
+    (system system) (target target)
+    (host-inputs `(,@(if source
+                         `(("source" ,source))
+                         '())
+                   ,@inputs
+                   ;; For interpreters in #! (shebang)
+                   ,@(if target
+                         `(("perl" ,perl))
+                         '())
 
-                        ;; Keep the standard inputs of 'gnu-build-system'.
-                        ,@(standard-packages)))
-         (build-inputs `(("perl" ,perl)
-                         ,@native-inputs))
-         (outputs outputs)
-         (build perl-build)
-         (arguments (strip-keyword-arguments private-keywords arguments)))))
+                   ;; Keep the standard inputs of 'gnu-build-system'.
+                   ;; TODO: make this unconditional, putting this into 'build-inputs'.
+                   ,@(if target
+                         '()
+                         (standard-packages))))
+    (build-inputs `(("perl" ,perl)
+                    ,@native-inputs
+                    ,@(if target
+                          (standard-cross-packages target 'host)
+                          '())
+                    ,@(if target
+                          (standard-packages)
+                          '())))
+    ;; Keep the standard inputs of 'gnu-build-system'.
+    (target-inputs (if target
+                       (standard-cross-packages target 'target)
+                       '()))
+    (outputs outputs)
+    (build (if target
+               perl-cross-build
+               perl-build))
+    (arguments (strip-keyword-arguments private-keywords arguments))))
 
 (define* (perl-build name inputs
                      #:key source
@@ -127,6 +151,68 @@ (define build
     (gexp->derivation name build
                       #:system system
                       #:target #f
+                      #:graft? #f
+                      #:guile-for-build guile)))
+
+(define* (perl-cross-build name #:key
+                           source
+                           target
+                           build-inputs host-inputs target-inputs
+                           (search-paths '())
+                           (native-search-paths '())
+                           (tests? #f) ; usually not possible when cross-compiling
+                           (parallel-build? #t)
+                           (parallel-tests? #t)
+                           (make-maker? #f)
+                           (make-maker-flags ''())
+                           (module-build-flags ''())
+                           (phases '(@ (guix build perl-build-system)
+                                       %standard-phases))
+                           (outputs '("out"))
+                           (system (%current-system))
+                           (build (nix-system->gnu-triplet system))
+                           (guile #f)
+                           (imported-modules %perl-build-system-modules)
+                           (modules '((guix build perl-build-system)
+                                      (guix build utils))))
+  "Cross-build SOURCE to TARGET using PERL, and with INPUTS.  This assumes that
+SOURCE provides a `Makefile.PL' file as its build system and does not use XS
+or similar."
+  (define inputs
+    #~(append #$(input-tuples->gexp host-inputs)
+              #+(input-tuples->gexp target-inputs)))
+  (define builder
+    (with-imported-modules imported-modules
+      #~(begin
+          (use-modules #$@(sexp->gexp modules))
+          (perl-build #:name #$name
+                      #:source #+source
+                      #:search-paths '#$(sexp->gexp
+                                         (map search-path-specification->sexp
+                                              search-paths))
+                      #:native-search-paths '#$(sexp->gexp
+                                                (map search-path-specification->sexp
+                                                     native-search-paths))
+                      #:make-maker? #$make-maker?
+                      #:make-maker-flags #$make-maker-flags
+                      #:module-build-flags #$(sexp->gexp module-build-flags)
+                      #:phases #$phases
+                      #:build #$build
+                      #:system #$system
+                      #:target #$target
+                      #:test-target "test"
+                      #:tests? #$tests?
+                      #:parallel-build? #$parallel-build?
+                      #:parallel-tests? #$parallel-tests?
+                      #:outputs #$(outputs->gexp outputs)
+                      #:inputs #$inputs
+                      #:native-inputs #+(input-tuples->gexp build-inputs)))))
+  (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
+                                                  system #:graft? #f)))
+    (gexp->derivation name builder
+                      #:system system
+                      #:target target
+                      #:graft? #false
                       #:guile-for-build guile)))
 
 (define perl-build-system

base-commit: d519305d83d08058e4def2c4d72fe62102d9599d
-- 
2.37.0





^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [bug#56882] [PATCH 2/4] gnu: freedesktop: Add 'bash' input for 'wrap-program'
  2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
@ 2022-08-02 12:13   ` Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 3/4] perl-file-mimeinfo: Fix cross-compilation Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 4/4] xdg-utils: Support cross-compilation Maxime Devos
  2 siblings, 0 replies; 6+ messages in thread
From: Maxime Devos @ 2022-08-02 12:13 UTC (permalink / raw)
  To: 56882; +Cc: Maxime Devos

It is required for cross-compilation.
Cherry-picked from <https://issues.guix.gnu.org/49327#6>.

* gnu/packages/freedesktop.scm
(udisks)[inputs]: Add 'bash-minimal' when cross-compiling.
(perl-file-mimeinfo)[inputs]: Likewise.
(udiskie)[inputs]: Likewise.
---
 gnu/packages/freedesktop.scm | 33 +++++++++++++++++++++++++--------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 4d06235771..577b354f66 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -1319,13 +1319,17 @@ (define-public udisks
     (propagated-inputs
      (list glib)) ; required by udisks2.pc
     (inputs
-     (list acl
-           cryptsetup
-           libatasmart
-           libblockdev
-           libgudev
-           polkit
-           util-linux))
+     `(,acl
+       ;; TODO(staging): Make unconditional.
+       ,@(if (%current-target-system)
+             (list bash-minimal) ; for wrap-program
+             '())
+       ,cryptsetup
+       ,libatasmart
+       ,libblockdev
+       ,libgudev
+       ,polkit
+       ,util-linux))
     (outputs '("out"
                "doc"))                            ;5 MiB of gtk-doc HTML
     (arguments
@@ -1930,6 +1934,11 @@ (define-public perl-file-mimeinfo
         (base32
          "1sh8r6vczyz08zm8vfsjmkg6a165wch54akjdrd1vbifcmwjg5pi"))))
     (build-system perl-build-system)
+    (inputs
+     ;; TODO(staging): Make unconditional.
+     (if (%current-target-system)
+         (list bash-minimal) ; for wrap-program
+         '()))
     ;; If the tests are fixed, add perl-test-pod, perl-test-pod-coverage, and
     ;; perl-test-tiny as native-inputs.
     (propagated-inputs
@@ -2026,7 +2035,15 @@ (define-public udiskie
        ("gettext" ,gettext-minimal)
        ("gobject-introspection" ,gobject-introspection)))
     (inputs
-     (list gobject-introspection gtk+ libappindicator libnotify udisks))
+     ;; TODO(staging): Make unconditional.
+     `(,@(if (%current-target-system)
+             (list bash-minimal)
+             '())
+       ,gobject-introspection
+       ,gtk+
+       ,libappindicator
+       ,libnotify
+       ,udisks))
     (propagated-inputs
      (list python-docopt python-pygobject python-keyutils python-pyxdg
            python-pyyaml))
-- 
2.37.0





^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [bug#56882] [PATCH 3/4] perl-file-mimeinfo: Fix cross-compilation.
  2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 2/4] gnu: freedesktop: Add 'bash' input for 'wrap-program' Maxime Devos
@ 2022-08-02 12:13   ` Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 4/4] xdg-utils: Support cross-compilation Maxime Devos
  2 siblings, 0 replies; 6+ messages in thread
From: Maxime Devos @ 2022-08-02 12:13 UTC (permalink / raw)
  To: 56882; +Cc: Maxime Devos

The result of "guix style" was ignored, as it put #~(modify-phases ...) on the
same line as #:phases, causing it to go beyond to 80 columns limit.

* gnu/packages/freedesktop.scm
(perl-file-mimeinfo)[arguments]<#:phases>: Make it a G-exp to avoid messy nested
quasiquotation.
{wrap-programs}: When cross-compiling, don't use the PELRL5LIB environment
variable, instead use 'search-path-as-list'.
---
 gnu/packages/freedesktop.scm | 37 +++++++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 13 deletions(-)

diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 577b354f66..2d12567a42 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -1946,19 +1946,30 @@ (define-public perl-file-mimeinfo
     (arguments
      ;; Some tests fail due to requiring the mimetype of perl files to be
      ;; text/plain when they are actually application/x-perl.
-     `(#:tests? #f
-       #:phases
-       (modify-phases %standard-phases
-         (add-after 'install 'wrap-programs
-           (lambda* (#:key outputs #:allow-other-keys)
-             (let ((out (assoc-ref outputs "out")))
-               (for-each (lambda (prog)
-                           (wrap-program (string-append out "/bin/" prog)
-                             `("PERL5LIB" ":" prefix
-                               (,(string-append (getenv "PERL5LIB") ":" out
-                                                "/lib/perl5/site_perl")))))
-                         '("mimeopen" "mimetype")))
-             #t)))))
+     (list #:tests? #f
+           #:phases
+           #~(modify-phases %standard-phases
+               (add-after 'install 'wrap-programs
+                 ;; TODO(staging): Make unconditional.
+                 (lambda* (#:key #$@(if (%current-target-system)
+                                        #~(inputs)
+                                        #~()) outputs #:allow-other-keys)
+                   (let ((out (assoc-ref outputs "out")))
+                     (for-each
+                      (lambda (prog)
+                        (wrap-program (string-append out "/bin/" prog)
+                          `("PERL5LIB" ":" prefix
+                            ;; PERL5LIB looks in 'native-inputs', not 'inputs',
+                            ;; whereas the latter is required for
+                            ;; cross-compilation.
+                            #$(if (%current-target-system)
+                                  #~,(search-path-as-list
+                                      '("lib/perl5/site_perl")
+                                      (map cdr (append inputs outputs)))
+                                  #~(,(string-append (getenv "PERL5LIB") ":" out
+                                                     "/lib/perl5/site_perl"))))))
+                      '("mimeopen" "mimetype")))
+                   #t)))))
     (home-page "https://metacpan.org/release/File-MimeInfo")
     (synopsis "Determine file type from the file name")
     (description
-- 
2.37.0





^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [bug#56882] [PATCH 4/4] xdg-utils: Support cross-compilation.
  2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 2/4] gnu: freedesktop: Add 'bash' input for 'wrap-program' Maxime Devos
  2022-08-02 12:13   ` [bug#56882] [PATCH 3/4] perl-file-mimeinfo: Fix cross-compilation Maxime Devos
@ 2022-08-02 12:13   ` Maxime Devos
  2 siblings, 0 replies; 6+ messages in thread
From: Maxime Devos @ 2022-08-02 12:13 UTC (permalink / raw)
  To: 56882; +Cc: Maxime Devos

"guix style" does not support with-directory-excursion yet, leading to too
much spacing, so I have ignored its results.

It has been verified that this does not cause rebuilds when compiling
natively.  The references graph when cross-compiling has also been verified --
glibc-2.33 and the native bash-static-5.1.8 still remains in the graph, but
via the cross-compiled inetutils-2.0, ncurses-6.2.20210619 and via
gcc-cross-TARGET-10.3.0-lib, which is not related with Perl cross-compilation.

* gnu/packages/freedesktop.scm
(xdg-utils)[inputs]{bash-minimal,file}: New inputs when cross-compiling.
(xdg-utils)[arguments]<#:phases>{locate-catalog-files}: Add 'native-inputs'
argument when cross-compiling. Look for docbook-xml and docbook-xsl in
native-inputs when cross-compiling.  While we are at it, eliminate input
labels with search-input-file.
(xdg-utils)[arguments]<#:phases>{patch-hardcoded-patch}: Use
search-input-file + inputs instead of 'which' when cross-compiling.
---
 gnu/packages/freedesktop.scm | 58 ++++++++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 13 deletions(-)

diff --git a/gnu/packages/freedesktop.scm b/gnu/packages/freedesktop.scm
index 2d12567a42..1c984ebca8 100644
--- a/gnu/packages/freedesktop.scm
+++ b/gnu/packages/freedesktop.scm
@@ -25,7 +25,7 @@
 ;;; Copyright © 2021 pineapples <guixuser6392@protonmail.com>
 ;;; Copyright © 2021 Sarah Morgensen <iskarian@mgsn.dev>
 ;;; Copyright © 2021 Robby Zambito <contact@robbyzambito.me>
-;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
+;;; Copyright © 2021, 2022 Maxime Devos <maximedevos@telenet.be>
 ;;; Copyright © 2021 John Kehayias <john.kehayias@protonmail.com>
 ;;; Copyright © 2021, 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
 ;;; Copyright © 2022 Daniel Meißner <daniel.meissner-i4k@ruhr-uni-bochum.de>
@@ -76,6 +76,7 @@ (define-module (gnu packages freedesktop)
   #:use-module (gnu packages disk)
   #:use-module (gnu packages docbook)
   #:use-module (gnu packages documentation)
+  #:use-module (gnu packages file)
   #:use-module (gnu packages fontutils)
   #:use-module (gnu packages gawk)
   #:use-module (gnu packages gettext)
@@ -414,7 +415,15 @@ (define-public xdg-utils
      (list docbook-xsl docbook-xml-4.1.2 libxslt w3m xmlto))
     (inputs
      `(("awk" ,gawk)
+       ;; TODO(staging): Make this unconditional, to avoid canonical packages,
+       ;; see <https://lists.gnu.org/archive/html/guix-devel/2020-02/msg00148.html>.
+       ,@(if (%current-target-system)
+             `(("bash-minimal" ,bash-minimal)) ; for 'wrap-program'
+             '())
        ("coreutils" ,coreutils)
+       ,@(if (%current-target-system)
+             `(("file" ,file))
+             '())
        ("grep" ,grep)
        ("inetutils" ,inetutils) ; xdg-screensaver uses `hostname'
        ("perl-file-mimeinfo" ,perl-file-mimeinfo) ; for mimeopen fallback
@@ -428,19 +437,41 @@ (define-public xdg-utils
        #:phases
        (modify-phases %standard-phases
          (add-after 'unpack 'patch-hardcoded-paths
-           (lambda _
-             (substitute* "scripts/xdg-mime.in"
-               (("/usr/bin/file") (which "file")))
-             (substitute* "scripts/xdg-open.in"
-               (("/usr/bin/printf") (which "printf")))
-             #t))
+           ;; TODO(staging): make unconditional
+           (,@(if (%current-target-system)
+                 '(lambda* (#:key inputs #:allow-other-keys))
+                 '(lambda _))
+            (substitute* "scripts/xdg-mime.in"
+              (("/usr/bin/file")
+               (,@(if (%current-target-system)
+                      '(search-input-file inputs "bin/file")
+                      '(which "file")))))
+            (substitute* "scripts/xdg-open.in"
+              (("/usr/bin/printf")
+               (,@(if (%current-target-system)
+                      '(search-input-file inputs "bin/printf")
+                      '(which "printf")))))
+            #t))
          (add-before 'build 'locate-catalog-files
-           (lambda* (#:key inputs #:allow-other-keys)
-             (let ((xmldoc (string-append (assoc-ref inputs "docbook-xml")
-                                          "/xml/dtd/docbook"))
-                   (xsldoc (string-append (assoc-ref inputs "docbook-xsl")
-                                          "/xml/xsl/docbook-xsl-"
-                                          ,(package-version docbook-xsl))))
+           ;; TODO(staging): Make unconditional for simplicity.
+           (lambda* (#:key inputs ,@(if (%current-target-system)
+                                        '(native-inputs)
+                                        '()) #:allow-other-keys)
+             ;; TODO(staging): Make unconditional for simplicity and
+             ;; to avoid dependning on input labels.
+             (let ,(if (%current-target-system)
+                       `((native-inputs (or native-inputs inputs))
+                         (xmldoc (search-input-directory native-inputs
+                                                         "xml/dtd/docbook"))
+                         (xsldoc (search-input-directory
+                                  native-inputs
+                                  (string-append "xml/xsl/docbook-xsl-"
+                                                 ,(package-version docbook-xsl)))))
+                       `((xmldoc (string-append (assoc-ref inputs "docbook-xml")
+                                                "/xml/dtd/docbook"))
+                         (xsldoc (string-append (assoc-ref inputs "docbook-xsl")
+                                                "/xml/xsl/docbook-xsl-"
+                                                ,(package-version docbook-xsl)))))
                (for-each (lambda (file)
                            (substitute* file
                              (("http://.*/docbookx\\.dtd")
@@ -456,6 +487,7 @@ (define-public xdg-utils
                                  "/manpages/docbook.xsl man")))
                (setenv "STYLESHEET"
                        (string-append xsldoc "/html/docbook.xsl"))
+               ;; TODO(staging): Might as well remove the #t while we are at it.
                #t)))
          (add-after 'install 'wrap-executables
            (lambda* (#:key inputs outputs #:allow-other-keys)
-- 
2.37.0





^ permalink raw reply related	[flat|nested] 6+ messages in thread

* bug#56882: [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils
  2022-08-02 11:54 [bug#56882] [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Maxime Devos
  2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
@ 2022-08-06 16:25 ` Mathieu Othacehe
  1 sibling, 0 replies; 6+ messages in thread
From: Mathieu Othacehe @ 2022-08-06 16:25 UTC (permalink / raw)
  To: Maxime Devos; +Cc: 56882-done


Hello Maxime,

> Supporting cross-compilation of xdg-utils opens the way to trying
> cross-compilation of Qt things.
>
> Things like XS are unsupported -- going by
> https://arsv.github.io/perl-cross/modules.html and the web page that states
> that external modules need to be copied into Perl first (but which I cannot
> find anymore), it sounds rather complicated.

At least that's a very good start :) I fixed some long lines before pushing.

Thanks,

Mathieu




^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2022-08-06 16:26 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-08-02 11:54 [bug#56882] [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Maxime Devos
2022-08-02 12:13 ` [bug#56882] [PATCH 1/4] build-system/perl: Support cross-compilation of some Perl packages Maxime Devos
2022-08-02 12:13   ` [bug#56882] [PATCH 2/4] gnu: freedesktop: Add 'bash' input for 'wrap-program' Maxime Devos
2022-08-02 12:13   ` [bug#56882] [PATCH 3/4] perl-file-mimeinfo: Fix cross-compilation Maxime Devos
2022-08-02 12:13   ` [bug#56882] [PATCH 4/4] xdg-utils: Support cross-compilation Maxime Devos
2022-08-06 16:25 ` bug#56882: [PATCH 0/4] build-system/perl: Support some cross-compilation, and test with xdg-utils Mathieu Othacehe

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as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).