diff options
Diffstat (limited to 'guix/describe.scm')
| -rw-r--r-- | guix/describe.scm | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/guix/describe.scm b/guix/describe.scm index 00372bbed7..893dca2640 100644 --- a/guix/describe.scm +++ b/guix/describe.scm @@ -21,10 +21,12 @@ #:use-module (guix profiles) #:use-module (guix packages) #:use-module ((guix utils) #:select (location-file)) - #:use-module ((guix store) #:select (%store-prefix)) + #:use-module ((guix store) #:select (%store-prefix store-path?)) + #:use-module ((guix config) #:select (%state-directory)) #:use-module (srfi srfi-1) #:use-module (ice-9 match) #:export (current-profile + current-profile-date current-profile-entries package-path-entries @@ -55,6 +57,27 @@ or #f if this is not applicable." (and (file-exists? (string-append candidate "/manifest")) candidate))))))) +(define (current-profile-date) + "Return the creation date of the current profile (produced by 'guix pull'), +as a number of seconds since the Epoch, or #f if it could not be determined." + ;; Normally 'current-profile' will return ~/.config/guix/current. We need + ;; to 'readlink' once to get '/var/guix/…/guix-profile', whose mtime is the + ;; piece of information we're looking for. + (let loop ((profile (current-profile))) + (match profile + (#f #f) + ((? store-path?) #f) + (file + (if (string-prefix? %state-directory file) + (and=> (lstat file) stat:mtime) + (catch 'system-error + (lambda () + (let ((target (readlink file))) + (loop (if (string-prefix? "/" target) + target + (string-append (dirname file) "/" target))))) + (const #f))))))) + (define current-profile-entries (mlambda () "Return the list of entries in the 'guix pull' profile the calling process |