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bug#37732: mps-youtube propagates util-linux

From: Marius Bakke
Subject: bug#37732: mps-youtube propagates util-linux
Date: Sun, 13 Oct 2019 16:26:40 +0200
User-agent: Notmuch/0.29.1 (https://notmuchmail.org) Emacs/26.2 (x86_64-pc-linux-gnu)

Hello Diego,

Thanks for the report!

Diego Nicola Barbato <address@hidden> writes:

> Hi Guix,
> An unfortunate chain of propagated-inputs causes 'util-linux' (mount,
> umount, etc.) to be installed alongside 'mps-youtube': 'mps-youtube'
> propagates 'python-pygobject', which propagates 'glib', which propagates
> 'util-linux'.  It seems to have been introduced with commit 6c237a2,
> when 'util-linux' was moved to the propagated-inputs of 'glib'.
> This is a problem on foreign distributions, where the stowaway 'mount'
> and 'umount' commands installed by Guix shadow the setuid ones provided
> by the distro.

I have attached a WIP patch that fixes this "long term", by moving the
util-linux libraries to a separate output.  It rebuilds 7753 packages
and is intended for the 'core-updates' branch.

From b9cbe08694ddd8248ac32ce60d5fc40d5c619a54 Mon Sep 17 00:00:00 2001
From: Marius Bakke <address@hidden>
Date: Sun, 13 Oct 2019 16:07:44 +0200
Subject: [PATCH] gnu: util-linux: Move libraries to separate output.

Fixes <https://bugs.gnu.org/37732>.
Reported by Diego Nicola Barbato <address@hidden>.

* gnu/packages/linux.scm (util-linux)[outputs]: Add "dev".
[arguments]: Update #:configure-flags accordingly.  Add phase
"adjust-bindirs", and rename "move-static-libraries" to "move-libraries",
while adding a substitution for the .pc files.
* gnu/packages/fontutils.scm (fontconfig)[propagated-inputs]: Use the "dev"
output of UTIL-LINUX.
* gnu/packages/glib.scm (glib)[propagated-inputs]: Likewise.
 gnu/packages/fontutils.scm |  2 +-
 gnu/packages/glib.scm      |  2 +-
 gnu/packages/linux.scm     | 39 ++++++++++++++++++++++++++++++++------
 3 files changed, 35 insertions(+), 8 deletions(-)

diff --git a/gnu/packages/fontutils.scm b/gnu/packages/fontutils.scm
index e355f7bb89..e01ea615be 100644
--- a/gnu/packages/fontutils.scm
+++ b/gnu/packages/fontutils.scm
@@ -304,7 +304,7 @@ fonts to/from the WOFF2 format.")
    ;; In Requires or Requires.private of fontconfig.pc.
    (propagated-inputs `(("expat" ,expat)
                         ("freetype" ,freetype)
-                        ("libuuid" ,util-linux)))
+                        ("libuuid" ,util-linux "dev")))
    (inputs `(("gs-fonts" ,gs-fonts)))
     `(("gperf" ,gperf)
diff --git a/gnu/packages/glib.scm b/gnu/packages/glib.scm
index c558d9fcb6..ce695843ef 100644
--- a/gnu/packages/glib.scm
+++ b/gnu/packages/glib.scm
@@ -185,7 +185,7 @@ shared NFS home directories.")
     `(("pcre" ,pcre)  ; in the Requires.private field of glib-2.0.pc
       ("libffi" ,libffi) ; in the Requires.private field of gobject-2.0.pc
       ;; These are in the Requires.private field of gio-2.0.pc
-      ("util-linux" ,util-linux)  ; for libmount
+      ("util-linux" ,util-linux "dev")  ;for libmount
       ("libselinux" ,libselinux)
       ("zlib" ,zlib)))
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index bc39757da2..5a7351eaee 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -1089,19 +1089,40 @@ providing the system administrator with some help in 
common tasks.")
                     (("build_kill=yes") "build_kill=no"))
     (build-system gnu-build-system)
-    (outputs '("out"
-               "static"))      ; >2 MiB of static .a libraries
+    (outputs '("out"                   ;6.4 MiB executables and documentation
+               "dev"                   ;8.8 MiB shared libraries, headers and 
+               "static"))              ;2.9 MiB static .a libraries
      `(#:configure-flags (list "--disable-use-tty-group"
                                ;; Don't try to chown root:root mount and umount
+                               "--localstatedir=/var"
+                               (string-append "--localedir="
+                                              (assoc-ref %outputs "dev")
+                                              "/share/locale")
+                               (string-append "--includedir="
+                                              (assoc-ref %outputs "dev") 
+                               (string-append "--exec_prefix="
+                                              (assoc-ref %outputs "dev"))
+                               (string-append "--bindir="
+                                              (assoc-ref %outputs "out") 
+                               (string-append "--sbindir="
+                                              (assoc-ref %outputs "out") 
                                ;; Install completions where our
                                ;; bash-completion package expects them.
                                (string-append "--with-bashcompletiondir="
                                               (assoc-ref %outputs "out")
        #:phases (modify-phases %standard-phases
+                  (add-before 'configure 'adjust-bindirs
+                    (lambda _
+                      ;; Some binaries are "hard coded" to use 
+                      ;; instead of --bindir.  Adjust those to use $prefix 
+                      (substitute* "configure"
+                        (("\\$\\{exec_prefix\\}/(s?bin)" _ bin)
+                         (string-append "${prefix}/" bin)))
+                      #t))
                    'build 'set-umount-file-name
                    (lambda* (#:key outputs #:allow-other-keys)
@@ -1122,12 +1143,13 @@ providing the system administrator with some help in 
common tasks.")
                           (string-append net "/etc/services")))
-                   'install 'move-static-libraries
+                   'install 'split-outputs
                    (lambda* (#:key outputs #:allow-other-keys)
-                     (let ((out    (assoc-ref outputs "out"))
+                     (let ((dev    (assoc-ref outputs "dev"))
                            (static (assoc-ref outputs "static")))
                        (mkdir-p (string-append static "/lib"))
-                       (with-directory-excursion out
+                       (with-directory-excursion dev
                          (for-each (lambda (file)
                                      (rename-file file
                                                   (string-append static "/"
@@ -1138,7 +1160,12 @@ providing the system administrator with some help in 
common tasks.")
                          ;; files so that Libtool does the right thing when 
                          ;; the shared and static library is available.
                          (substitute* (find-files "lib" "\\.la$")
-                           (("old_library=.*") "old_library=''\n")))
+                           (("old_library=.*") "old_library=''\n"))
+                         ;; Finally, drop the unused "prefix=" from the 
+                         ;; files to avoid a cyclic reference on "out".
+                         (substitute* (find-files "lib" "\\.pc$")
+                           (("^prefix=.*") "")))
     (inputs `(("zlib" ,zlib)

The size of 'fontconfig' (as reported by `guix size`) decreases from
103.6 MiB to 92.1 MiB with this patch.  \o/

Short term I'm not sure what to do.  Perhaps we can add a
"glib-sans-util-linux" variant that does not propagate util-linux?  Or a
variant that propagates a util-linux-sans-binaries?

Diego: one work-around you can try in the meantime is to create a
~/setuid-programs, add it first on PATH, and symlink the required
binaries in there.  Sorry for the inconvenience! 

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