pack: Import (guix store database) only when '--localstatedir' is passed.

This is another way to address <https://bugs.gnu.org/32184>, which was
previously addressed in commit 19c924af4f.

* gnu/build/install.scm (register-closure): Move to...
* gnu/build/vm.scm (register-closure): ... here.  New procedure.
* guix/scripts/pack.scm (self-contained-tarball)[build]: Remove
now unneeded 'with-extensions' form and custom (guix config) module.
* tests/guix-pack.sh: Revert the strategy from
commit 19c924af4f.
* tests/pack.scm ("self-contained-tarball"): Likewise.

tests/guix-pack.sh

@@ -29,33 +29,21 @@ fi
 
 guix pack --version
 
-# Starting from commit 66e9944e078cbb9e0d618377dd6df6e639640efa, 'guix pack'
-# produces derivations that refer to guile-sqlite3 and libgcrypt.  To make
-# that relatively inexpensive, run the test in the user's global store if
-# possible, on the grounds that binaries may already be there or can be built
-# or downloaded inexpensively.
-
-NIX_STORE_DIR="`guile -c '(use-modules (guix config))(display %storedir)'`"
-localstatedir="`guile -c '(use-modules (guix config))(display %localstatedir)'`"
-GUIX_DAEMON_SOCKET="$localstatedir/guix/daemon-socket/socket"
-export NIX_STORE_DIR GUIX_DAEMON_SOCKET
-
-if ! guile -c '(use-modules (guix)) (exit (false-if-exception (open-connection)))'
-then
-    exit 77
-fi
+# Use --no-substitutes because we need to verify we can do this ourselves.
+GUIX_BUILD_OPTIONS="--no-substitutes"
+export GUIX_BUILD_OPTIONS
 
 # Build a tarball with no compression.
-guix pack --compression=none guile-bootstrap
+guix pack --compression=none --bootstrap guile-bootstrap
 
 # Build a tarball (with compression).  Check that '-e' works as well.
-out1="`guix pack guile-bootstrap`"
-out2="`guix pack -e '(@ (gnu packages bootstrap) %bootstrap-guile)'`"
+out1="`guix pack --bootstrap guile-bootstrap`"
+out2="`guix pack --bootstrap -e '(@ (gnu packages bootstrap) %bootstrap-guile)'`"
 test -n "$out1"
 test "$out1" = "$out2"
 
 # Build a tarball with a symlink.
-the_pack="`guix pack -S /opt/gnu/bin=bin guile-bootstrap`"
+the_pack="`guix pack --bootstrap -S /opt/gnu/bin=bin guile-bootstrap`"
 
 # Try to extract it.  Note: we cannot test whether /opt/gnu/bin/guile itself
 # exists because /opt/gnu/bin may be an absolute symlink to a store item that

tests/pack.scm

@@ -29,6 +29,9 @@
   #:use-module (gnu packages bootstrap)
   #:use-module (srfi srfi-64))
 
+(define %store
+  (open-connection-for-tests))
+
 ;; Globally disable grafts because they can trigger early builds.
 (%graft? #f)
 
@@ -48,40 +51,33 @@
 
 (test-begin "pack")
 
-;; The following test needs guile-sqlite3, libgcrypt, etc. as a consequence of
-;; commit c45477d2a1a651485feede20fe0f3d15aec48b39 and related changes.  Thus,
-;; run it on the user's store, if it's available, on the grounds that these
-;; dependencies may be already there, or we can get substitutes or build them
-;; quite inexpensively; see <https://bugs.gnu.org/32184>.
-
-(with-external-store store
-  (unless store (test-skip 1))
-  (test-assertm "self-contained-tarball" store
-    (mlet* %store-monad
-        ((profile (profile-derivation (packages->manifest
-                                       (list %bootstrap-guile))
-                                      #:hooks '()
-                                      #:locales? #f))
-         (tarball (self-contained-tarball "pack" profile
-                                          #:symlinks '(("/bin/Guile"
-                                                        -> "bin/guile"))
-                                          #:compressor %gzip-compressor
-                                          #:archiver %tar-bootstrap))
-         (check   (gexp->derivation
-                   "check-tarball"
-                   #~(let ((bin (string-append "." #$profile "/bin")))
-                       (setenv "PATH"
-                               (string-append #$%tar-bootstrap "/bin"))
-                       (system* "tar" "xvf" #$tarball)
-                       (mkdir #$output)
-                       (exit
-                        (and (file-exists? (string-append bin "/guile"))
-                             (string=? (string-append #$%bootstrap-guile "/bin")
-                                       (readlink bin))
-                             (string=? (string-append ".." #$profile
-                                                      "/bin/guile")
-                                       (readlink "bin/Guile"))))))))
-      (built-derivations (list check)))))
+(unless (network-reachable?) (test-skip 1))
+(test-assertm "self-contained-tarball" %store
+  (mlet* %store-monad
+      ((profile (profile-derivation (packages->manifest
+                                     (list %bootstrap-guile))
+                                    #:hooks '()
+                                    #:locales? #f))
+       (tarball (self-contained-tarball "pack" profile
+                                        #:symlinks '(("/bin/Guile"
+                                                      -> "bin/guile"))
+                                        #:compressor %gzip-compressor
+                                        #:archiver %tar-bootstrap))
+       (check   (gexp->derivation
+                 "check-tarball"
+                 #~(let ((bin (string-append "." #$profile "/bin")))
+                     (setenv "PATH"
+                             (string-append #$%tar-bootstrap "/bin"))
+                     (system* "tar" "xvf" #$tarball)
+                     (mkdir #$output)
+                     (exit
+                      (and (file-exists? (string-append bin "/guile"))
+                           (string=? (string-append #$%bootstrap-guile "/bin")
+                                     (readlink bin))
+                           (string=? (string-append ".." #$profile
+                                                    "/bin/guile")
+                                     (readlink "bin/Guile"))))))))
+    (built-derivations (list check))))
 
 (test-end)