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.

gnu/build/install.scm

@@ -18,7 +18,6 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (gnu build install)
-  #:use-module (guix store database)
   #:use-module (guix build utils)
   #:use-module (guix build store-copy)
   #:use-module (srfi srfi-26)
@@ -141,23 +140,6 @@ includes /etc, /var, /run, /bin/sh, etc., and all the symlinks to SYSTEM."
                 (try))
               (apply throw args)))))))
 
-(define* (register-closure prefix closure
-                           #:key
-                           (deduplicate? #t) (reset-timestamps? #t)
-                           (schema (sql-schema)))
-  "Register CLOSURE in PREFIX, where PREFIX is the directory name of the
-target store and CLOSURE is the name of a file containing a reference graph as
-produced by #:references-graphs..  As a side effect, if RESET-TIMESTAMPS? is
-true, reset timestamps on store files and, if DEDUPLICATE? is true,
-deduplicates files common to CLOSURE and the rest of PREFIX."
-  (let ((items (call-with-input-file closure read-reference-graph)))
-    (register-items items
-                    #:prefix prefix
-                    #:deduplicate? deduplicate?
-                    #:reset-timestamps? reset-timestamps?
-                    #:registration-time %epoch
-                    #:schema schema)))
-
 (define* (populate-single-profile-directory directory
                                             #:key profile closure
                                             (profile-name "guix-profile")

gnu/build/vm.scm

@@ -25,7 +25,7 @@
   #:use-module (guix build utils)
   #:use-module (guix build store-copy)
   #:use-module (guix build syscalls)
-  #:use-module ((guix store database) #:select (reset-timestamps))
+  #:use-module (guix store database)
   #:use-module (gnu build linux-boot)
   #:use-module (gnu build install)
   #:use-module (gnu system uuid)
@@ -191,6 +191,23 @@ the #:references-graphs parameter of 'derivation'."
           (mkdir output)
           (copy-recursively "xchg" output)))))
 
+(define* (register-closure prefix closure
+                           #:key
+                           (deduplicate? #t) (reset-timestamps? #t)
+                           (schema (sql-schema)))
+  "Register CLOSURE in PREFIX, where PREFIX is the directory name of the
+target store and CLOSURE is the name of a file containing a reference graph as
+produced by #:references-graphs..  As a side effect, if RESET-TIMESTAMPS? is
+true, reset timestamps on store files and, if DEDUPLICATE? is true,
+deduplicates files common to CLOSURE and the rest of PREFIX."
+  (let ((items (call-with-input-file closure read-reference-graph)))
+    (register-items items
+                    #:prefix prefix
+                    #:deduplicate? deduplicate?
+                    #:reset-timestamps? reset-timestamps?
+                    #:registration-time %epoch
+                    #:schema schema)))
+
 
 ;;;
 ;;; Partitions.

guix/scripts/pack.scm

@@ -164,14 +164,11 @@ added to the pack."
                       "/db/db.sqlite")))
 
   (define build
-    (with-imported-modules `(((guix config) => ,(make-config.scm))
-                             ,@(source-module-closure
+    (with-imported-modules (source-module-closure
                             `((guix build utils)
                               (guix build union)
-                                  (guix build store-copy)
                               (gnu build install))
-                                #:select? not-config?))
-      (with-extensions gcrypt-sqlite3&co
+                            #:select? not-config?)
       #~(begin
           (use-modules (guix build utils)
                        ((guix build union) #:select (relative-file-name))
@@ -270,7 +267,7 @@ added to the pack."
                                           ((source '-> _)
                                            (string-append "." source))
                                           (_ #f))
-                                          directives))))))))))
+                                        directives)))))))))
 
   (gexp->derivation (string-append name ".tar"
                                    (compressor-extension compressor))

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)
 
@@ -48,15 +51,8 @@
 
 (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
+(unless (network-reachable?) (test-skip 1))
+(test-assertm "self-contained-tarball" %store
   (mlet* %store-monad
       ((profile (profile-derivation (packages->manifest
                                      (list %bootstrap-guile))
@@ -81,7 +77,7 @@
                            (string=? (string-append ".." #$profile
                                                     "/bin/guile")
                                      (readlink "bin/Guile"))))))))
-      (built-derivations (list check)))))
+    (built-derivations (list check))))
 
 (test-end)