diff options
Diffstat (limited to 'guix/profiles.scm')
| -rw-r--r-- | guix/profiles.scm | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/guix/profiles.scm b/guix/profiles.scm index 5e69e012f9..c7aec7909b 100644 --- a/guix/profiles.scm +++ b/guix/profiles.scm @@ -47,6 +47,7 @@ manifest-pattern? manifest-remove + manifest-add manifest-installed? manifest-matching-entries @@ -196,6 +197,25 @@ must be a manifest-pattern." (manifest-entries manifest) patterns))) +(define (manifest-add manifest entries) + "Add a list of manifest ENTRIES to MANIFEST and return new manifest. +Remove MANIFEST entries that have the same name and output as ENTRIES." + (define (same-entry? entry name output) + (match entry + (($ <manifest-entry> entry-name _ entry-output _ ...) + (and (equal? name entry-name) + (equal? output entry-output))))) + + (make-manifest + (append entries + (fold (lambda (entry result) + (match entry + (($ <manifest-entry> name _ out _ ...) + (filter (negate (cut same-entry? <> name out)) + result)))) + (manifest-entries manifest) + entries)))) + (define (manifest-installed? manifest pattern) "Return #t if MANIFEST has an entry matching PATTERN (a manifest-pattern), #f otherwise." |