* nix/libstore/build.cc (DerivationGoal::startBuilder)
</etc/passwd>: Adjust build user directory.

Fixes: <https://issues.guix.gnu.org/78152>
Change-Id: I242940195e49b2ee9544e9e5211a6598f682cbfe
---
The fix was tested by:

1. Exiting all 'guix shell' envs then # herd stop guix-daemon

2. sudo -E ./pre-inst-env guix-daemon --build-users-group guixbuild \
   --max-silent-time 3600 --timeout 86400 --log-compression none \
   --discover=no --substitute-urls \
   'https://bordeaux.guix.gnu.org https://ci.guix.gnu.org' --max-jobs=10 &

3. Apply the following diff:
modified   gnu/packages/ssh.scm
@@ -182,13 +182,7 @@ (define-public libssh
               ;; Test sources.
               (substitute* '("tests/server/test_server/default_cb.c")
                 (("\"/bin/sh\"")
-                 (format #f "~s" (which "sh"))))))
-          (add-before 'check 'prepare-for-tests
-            ;; A few test rely on the assumption that HOME == user's pw_dir,
-            ;; which is not satisfied in Guix, where `pw_dir' is '/' while
-            ;; HOME is '/homeless-shelter'.
-            (lambda _
-              (setenv "HOME" "/"))))))
+                 (format #f "~s" (which "sh")))))))))
     (native-inputs (list cmocka))
     (inputs (list bash-minimal mit-krb5 openssl zlib))
     (synopsis "SSH client library")

4. Building it successfully: ./pre-inst-env guix build libssh
 nix/libstore/build.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index a1f39d9a8bf..2cf2a7d06c2 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -1845,7 +1845,7 @@ void DerivationGoal::startBuilder()
 
         writeFile(chrootRootDir + "/etc/passwd",
             (format(
-                "nixbld:x:%1%:%2%:Nix build user:/:/noshell\n"
+                "nixbld:x:%1%:%2%:Nix build user:/homeless-shelter:/noshell\n"
                 "nobody:x:65534:65534:Nobody:/:/noshell\n")
                 % (buildUser.enabled() ? buildUser.getUID() : guestUID)
                 % (buildUser.enabled() ? buildUser.getGID() : 
guestGID)).str());

base-commit: b2b7d2a3275d5ba866ae7fecac928ed4bd416beb
-- 
2.49.0




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