bug#39807: [PATCH] guix: pack: Only wrap executable files.

[Eric Bavier <bavier@posteo.net>]

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On Fri, 2020-10-23 at 12:48 +0200, Ludovic Courtès wrote:
> Hi Eric,
> 
> Eric Bavier <bavier@posteo.net> skribis:
> 
> > From 7caaea0b21e5b97836b1a40a44efd2f38dbab7ae Mon Sep 17 00:00:00 2001
> > From: Eric Bavier <bavier@member.fsf.org>
> > Date: Wed, 21 Oct 2020 18:33:52 -0500
> > Subject: [PATCH 1/2] guix: pack: Fix offset calculation for store directory
> >  mount point.
> > 
> > Fixes wrapping of non-package things, where the target store directory may
> > differ in length from the original.
> > 
> > * guix/scripts/pack.scm (wrapped-package)<build-wrapper>: Define
> > WRAPPER_PROGRAM macro with wrapper's file name.
> > * gnu/packages/aux-files/run-in-namespace.c (main): Offset index by len of
> > that file name.
> 
> LGTM!  Perhaps add a link to this discussion in the commit log.
> 
> > From 85bd962e929924b016a85d3a0b3dff434ebe8de3 Mon Sep 17 00:00:00 2001
> > From: Eric Bavier <bavier@member.fsf.org>
> > Date: Mon, 24 Feb 2020 23:47:02 -0600
> > Subject: [PATCH 2/2] guix: pack: Only wrap executable files.
> > 
> > * guix/scripts/pack.scm (wrapped-package)<build>: Build wrappers for
> > executable files and symlink others.
> > * tests/guix-pack-relocatable.sh: Test relocatable example of mixed
> > executable and non-executable files.
> 
> LGTM too!
> 
> Thanks,
> Ludo’.

Pushed in a73896425e92e5162766afdf042748b18f2462af and
4184998c70f9c4af101feb28cc19c5550abffcec after some small changes to
the test to more faithfully mimic the failure case that was causing
wrapped git commands to fail.

`~Eric

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diff --git a/tests/guix-pack-relocatable.sh b/tests/guix-pack-relocatable.sh
index 5ac8cdc718..0255075fb1 100644
--- a/tests/guix-pack-relocatable.sh
+++ b/tests/guix-pack-relocatable.sh
@@ -145,7 +145,7 @@ guix pack -RR python-numpy python-scipy --no-grafts -n
 # Check that packages that mix executable and support files (e.g. git) in the
 # "binary" directories still work after wrapped.
 cat >"$test_directory/manifest.scm" <<'EOF'
-(use-modules (guix) (guix profiles)
+(use-modules (guix) (guix profiles) (guix search-paths)
              (gnu packages bootstrap))
 (manifest
  (list (manifest-entry
@@ -154,12 +154,22 @@ cat >"$test_directory/manifest.scm" <<'EOF'
 			  `(("bin/hello"
 			     ,(program-file
                                "hello"
-                               #~(begin (display (load "../libexec/msg"))(newline))
+			       #~(begin
+				   (add-to-load-path (getenv "HELLO_EXEC_PATH"))
+				   (display (load-from-path "msg"))(newline))
                                #:guile %bootstrap-guile))
-			    ("libexec/msg"
-			     ,(plain-file "msg" "42"))))))))
+			    ("libexec/hello/msg"
+			     ,(plain-file "msg" "42")))))
+	(search-paths
+	 (list (search-path-specification
+		(variable "HELLO_EXEC_PATH")
+		(files '("libexec/hello"))
+		(separator #f)))))))
 EOF
 tarball="`guix pack -RR -S /opt= -m $test_directory/manifest.scm`"
 (cd "$test_directory"; tar xvf "$tarball")
-run_without_store "$test_directory/opt/bin/hello" > "$test_directory/output"
+( export GUIX_PROFILE=$test_directory/opt
+  . $GUIX_PROFILE/etc/profile
+  run_without_store "$test_directory/opt/bin/hello" > "$test_directory/output" )
+cat "$test_directory/output"
 test "`cat $test_directory/output`" = "42"