profiles: 'packages->manifest' now accepts inferior packages.

* guix/profiles.scm (packages->manifest)[inferiors-loaded?]: New
variable.
[inferior->entry]: New procedure.
Accept inferior packages when INFERIORS-LOADED? is true.
* tests/guix-package.sh: Add test using a manifest with an inferior.
* tests/inferior.scm ("packages->manifest"): New test.

2 files changed, 26 insertions, 0 deletions

diff --git a/tests/guix-package.sh b/tests/guix-package.sh
index cef3b3452e3..f7dfbfad002 100644
--- a/tests/guix-package.sh
+++ b/tests/guix-package.sh
@@ -358,6 +358,21 @@ EOF
 guix package --bootstrap -m "$module_dir/manifest.scm"
 guix package -I | grep guile
 test `guix package -I | wc -l` -eq 1
+guix package --rollback --bootstrap
+
+# Applying a manifest file with inferior packages.
+cat > "$module_dir/manifest.scm"<<EOF
+(use-modules (guix inferior))
+
+(define i
+  (open-inferior "$abs_top_srcdir" #:command "scripts/guix"))
+
+(let ((guile (car (lookup-inferior-packages i "guile-bootstrap"))))
+  (packages->manifest (list guile)))
+EOF
+guix package --bootstrap -m "$module_dir/manifest.scm"
+guix package -I | grep guile
+test `guix package -I | wc -l` -eq 1
 
 # Error reporting.
 cat > "$module_dir/manifest.scm"<<EOF
diff --git a/tests/inferior.scm b/tests/inferior.scm
index 6f6abd28a18..d1d5c00a773 100644
--- a/tests/inferior.scm
+++ b/tests/inferior.scm
@@ -182,4 +182,15 @@
     (close-inferior inferior)
     (manifest-entry->list entry)))
 
+(test-equal "packages->manifest"
+  (map manifest-entry->list
+       (manifest-entries (packages->manifest
+                          (find-best-packages-by-name "guile" #f))))
+  (let* ((inferior (open-inferior %top-builddir
+                                  #:command "scripts/guix"))
+         (guile    (first (lookup-inferior-packages inferior "guile")))
+         (manifest (packages->manifest (list guile))))
+    (close-inferior inferior)
+    (map manifest-entry->list (manifest-entries manifest))))
+
 (test-end "inferior")