gnu: Add pbuilder.

* gnu/packages/debian.scm (pbuilder): New variable.

gnu/packages/debian.scm

@@ -36,10 +36,13 @@ (define-module (gnu packages debian)
   #:use-module (gnu packages gettext)
   #:use-module (gnu packages gnupg)
   #:use-module (gnu packages guile)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu packages man)
   #:use-module (gnu packages ncurses)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
-  #:use-module (gnu packages wget))
+  #:use-module (gnu packages wget)
+  #:use-module (srfi srfi-26))
 
 (define-public debian-archive-keyring
   (package
@@ -418,6 +421,152 @@ (define-public dpkg
 handling the installation and removal of Debian software packages.")
     (license license:gpl2+)))
 
+(define-public pbuilder
+  (package
+    (name "pbuilder")
+    (version "0.231")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://salsa.debian.org/pbuilder-team/pbuilder.git/")
+               (commit version)))
+        (file-name (git-file-name name version))
+        (sha256
+         (base32 "0z6f1fgcrkfql9ayc3d0nxra2y6cn91xd5lvr0hd8gdlp9xdvxbc"))))
+    (build-system gnu-build-system)
+    (arguments
+     (list
+       #:modules `((guix build gnu-build-system)
+                   (guix build utils)
+                   (srfi srfi-26))
+       #:phases
+       #~(modify-phases %standard-phases
+           (delete 'configure)          ; no configure script
+           (add-after 'unpack 'patch-source
+             (lambda* (#:key inputs outputs #:allow-other-keys)
+
+               ;; Documentation requires tldp-one-page.xsl
+               (substitute* "Makefile"
+                 ((".*-C Documentation.*") ""))
+
+               ;; Don't create #$output/var/cache/pbuilder/...
+               (substitute* '("Makefile"
+                              "pbuildd/Makefile")
+                 ((".*/var/cache/pbuilder.*") ""))
+
+               ;; Find the correct fallback location.
+               (substitute* '("pbuilder-checkparams"
+                              "pbuilder-loadconfig"
+                              "pbuilder-satisfydepends-apt"
+                              "pbuilder-satisfydepends-aptitude"
+                              "pbuilder-satisfydepends-classic"
+                              "t/test_pbuilder-satisfydepends-classic")
+                 (("\\$PBUILDER_ROOT(/usr)?") #$output))
+
+               ;; Some hardcoded paths
+               (substitute* '("debuild-pbuilder"
+                              "pbuilder"
+                              "pbuilder-buildpackage"
+                              "pbuilderrc"
+                              "pdebuild"
+                              "pdebuild-checkparams"
+                              "pdebuild-internal")
+                 (("/usr/lib/pbuilder")
+                  (string-append #$output "/lib/pbuilder")))
+               (substitute* "pbuildd/buildd-config.sh"
+                 (("/usr/share/doc/pbuilder")
+                  (string-append #$output "/share/doc/pbuilder")))
+               (substitute* "pbuilder-unshare-wrapper"
+                 (("/(s)?bin/ifconfig") "ifconfig")
+                 (("/(s)?bin/ip") (search-input-file inputs "/sbin/ip")))
+               (substitute* "Documentation/Makefile"
+                 (("/usr") ""))
+
+               ;; Ensure PATH works both in Guix and within the Debian chroot.
+               (substitute* "pbuilderrc"
+                 (("PATH=\"/usr/sbin:/usr/bin:/sbin:/bin")
+                  "PATH=\"$PATH:/usr/sbin:/usr/bin:/sbin:/bin"))))
+           (add-after 'install 'create-etc-pbuilderrc
+             (lambda* (#:key outputs #:allow-other-keys)
+               (with-output-to-file (string-append #$output "/etc/pbuilderrc")
+                 (lambda ()
+                   (format #t "# A couple of presets to make this work more smoothly.~@
+                           MIRRORSITE=\"http://deb.debian.org/debian\"~@
+                           if [ -r /run/setuid-programs/sudo ]; then~@
+                               PBUILDERROOTCMD=\"/run/setuid-programs/sudo -E\"~@
+                           fi~@
+                           PBUILDERSATISFYDEPENDSCMD=\"~a/lib/pbuilder/pbuilder-satisfydepends-apt\"~%"
+                           #$output)))))
+           (add-after 'install 'install-manpages
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let ((man (string-append #$output "/share/man/")))
+                 (install-file "debuild-pbuilder.1" (string-append man "man1"))
+                 (install-file "pdebuild.1" (string-append man "man1"))
+                 (install-file "pbuilder.8" (string-append man "man8"))
+                 (install-file "pbuilderrc.5" (string-append man "man5")))))
+           (add-after 'install 'wrap-programs
+             (lambda* (#:key inputs outputs #:allow-other-keys)
+               (for-each
+                 (lambda (file)
+                   (wrap-script file
+                    `("PATH" ":" prefix
+                      ,(map (compose dirname (cut search-input-file inputs <>))
+                            (list "/bin/cut"
+                                  "/bin/dpkg"
+                                  "/bin/grep"
+                                  "/bin/perl"
+                                  "/bin/sed"
+                                  "/bin/which"
+                                  "/sbin/debootstrap")))))
+                 (cons*
+                   (string-append #$output "/bin/pdebuild")
+                   (string-append #$output "/sbin/pbuilder")
+                   (find-files (string-append #$output "/lib/pbuilder"))))))
+           ;; Move the 'check phase to after 'install.
+           (delete 'check)
+           (add-after 'validate-runpath 'check
+             (assoc-ref %standard-phases 'check)))
+         #:make-flags
+         ;; No PREFIX, use DESTDIR instead.
+         #~(list (string-append "DESTDIR=" #$output)
+                 (string-append "SYSCONFDIR=" #$output "/etc")
+                 (string-append "BINDIR=" #$output "/bin")
+                 (string-append "PKGLIBDIR=" #$output "/lib/pbuilder")
+                 (string-append "SBINDIR=" #$output "/sbin")
+                 (string-append "PKGDATADIR=" #$output "/share/pbuilder")
+                 (string-append "EXAMPLEDIR=" #$output "/share/doc/pbuilder/examples")
+                 "PBUILDDDIR=/share/doc/pbuilder/examples/pbuildd/")))
+    (inputs
+     (list dpkg
+           debootstrap
+           grep
+           guile-3.0            ; for wrap-script
+           iproute
+           perl
+           which))
+    (native-inputs
+     (list man-db
+           util-linux))
+    (home-page "https://pbuilder-team.pages.debian.net/pbuilder/")
+    (synopsis "Personal package builder for Debian packages")
+    (description
+     "@code{pbuilder} is a personal package builder for Debian packages.
+@itemize
+@item@code{pbuilder} constructs a chroot system, and builds a package inside the
+chroot.  It is an ideal system to use to check that a package has correct
+build-dependencies.  It uses @code{apt} extensively, and a local mirror, or a
+fast connection to a Debian mirror is ideal, but not necessary.
+@item@code{pbuilder create} uses debootstrap to create a chroot image.
+@item@code{pbuilder update} updates the image to the current state of
+testing/unstable/whatever.
+@item@code{pbuilder build} takes a @code{*.dsc} file and builds a binary in the
+chroot image.
+@item@code{pdebuild} is a wrapper for Debian Developers, to allow running
+@code{pbuilder} just like @code{debuild}, as a normal user.
+@end itemize")
+    (license license:gpl2+)))
+
 (define-public reprepro
   (package
     (name "reprepro")