diff options
Diffstat (limited to 'guix/scripts/package.scm')
| -rw-r--r-- | guix/scripts/package.scm | 172 |
1 files changed, 141 insertions, 31 deletions
diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm index 5c3947dd63..1d00e39540 100644 --- a/guix/scripts/package.scm +++ b/guix/scripts/package.scm @@ -34,6 +34,7 @@ #:use-module (ice-9 vlist) #:use-module (srfi srfi-1) #:use-module (srfi srfi-11) + #:use-module (srfi srfi-19) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-37) @@ -95,8 +96,8 @@ (make-regexp (string-append "^" (regexp-quote (basename profile)) "-([0-9]+)"))) -(define (profile-numbers profile) - "Return the list of generation numbers of PROFILE, or '(0) if no +(define (generation-numbers profile) + "Return the sorted list of generation numbers of PROFILE, or '(0) if no former profiles were found." (define* (scandir name #:optional (select? (const #t)) (entry<? (@ (ice-9 i18n) string-locale<?))) @@ -139,12 +140,13 @@ former profiles were found." (() ; no profiles '(0)) ((profiles ...) ; former profiles around - (map (compose string->number - (cut match:substring <> 1) - (cute regexp-exec (profile-regexp profile) <>)) - profiles)))) + (sort (map (compose string->number + (cut match:substring <> 1) + (cute regexp-exec (profile-regexp profile) <>)) + profiles) + <)))) -(define (previous-profile-number profile number) +(define (previous-generation-number profile number) "Return the number of the generation before generation NUMBER of PROFILE, or 0 if none exists. It could be NUMBER - 1, but it's not the case when generations have been deleted (there are \"holes\")." @@ -153,7 +155,7 @@ case when generations have been deleted (there are \"holes\")." candidate highest)) 0 - (profile-numbers profile))) + (generation-numbers profile))) (define (profile-derivation store packages) "Return a derivation that builds a profile (a user environment) with @@ -205,7 +207,7 @@ all of PACKAGES, a list of name/version/output/path/deps tuples." packages) #:modules '((guix build union)))) -(define (profile-number profile) +(define (generation-number profile) "Return PROFILE's number or 0. An absolute file name must be used." (or (and=> (false-if-exception (regexp-exec (profile-regexp profile) (basename (readlink profile)))) @@ -214,17 +216,17 @@ all of PACKAGES, a list of name/version/output/path/deps tuples." (define (roll-back profile) "Roll back to the previous generation of PROFILE." - (let* ((number (profile-number profile)) - (previous-number (previous-profile-number profile number)) - (previous-profile (format #f "~a-~a-link" - profile previous-number)) - (manifest (string-append previous-profile "/manifest"))) + (let* ((number (generation-number profile)) + (previous-number (previous-generation-number profile number)) + (previous-generation (format #f "~a-~a-link" + profile previous-number)) + (manifest (string-append previous-generation "/manifest"))) (define (switch-link) - ;; Atomically switch PROFILE to the previous profile. + ;; Atomically switch PROFILE to the previous generation. (format #t (_ "switching from generation ~a to ~a~%") number previous-number) - (switch-symlinks profile previous-profile)) + (switch-symlinks profile previous-generation)) (cond ((not (file-exists? profile)) ; invalid profile (leave (_ "profile `~a' does not exist~%") @@ -233,19 +235,84 @@ all of PACKAGES, a list of name/version/output/path/deps tuples." (format (current-error-port) (_ "nothing to do: already at the empty profile~%"))) ((or (zero? previous-number) ; going to emptiness - (not (file-exists? previous-profile))) - (let*-values (((drv-path drv) - (profile-derivation (%store) '())) - ((prof) - (derivation-output-path - (assoc-ref (derivation-outputs drv) "out")))) - (when (not (build-derivations (%store) (list drv-path))) + (not (file-exists? previous-generation))) + (let* ((drv (profile-derivation (%store) '())) + (prof (derivation->output-path drv "out"))) + (when (not (build-derivations (%store) (list drv))) (leave (_ "failed to build the empty profile~%"))) - (switch-symlinks previous-profile prof) + (switch-symlinks previous-generation prof) (switch-link))) (else (switch-link))))) ; anything else +(define (generation-time profile number) + "Return the creation time of a generation in the UTC format." + (make-time time-utc 0 + (stat:ctime (stat (format #f "~a-~a-link" profile number))))) + +(define* (matching-generations str #:optional (profile %current-profile)) + "Return the list of available generations matching a pattern in STR. See +'string->generations' and 'string->duration' for the list of valid patterns." + (define (valid-generations lst) + (define (valid-generation? n) + (any (cut = n <>) (generation-numbers profile))) + + (fold-right (lambda (x acc) + (if (valid-generation? x) + (cons x acc) + acc)) + '() + lst)) + + (define (filter-generations generations) + (match generations + (() '()) + (('>= n) + (drop-while (cut > n <>) + (generation-numbers profile))) + (('<= n) + (valid-generations (iota n 1))) + ((lst ..1) + (valid-generations lst)) + (_ #f))) + + (define (filter-by-duration duration) + (define (time-at-midnight time) + ;; Return TIME at midnight by setting nanoseconds, seconds, minutes, and + ;; hours to zeros. + (let ((d (time-utc->date time))) + (date->time-utc + (make-date 0 0 0 0 + (date-day d) (date-month d) + (date-year d) (date-zone-offset d))))) + + (define generation-ctime-alist + (map (lambda (number) + (cons number + (time-second + (time-at-midnight + (generation-time profile number))))) + (generation-numbers profile))) + + (match duration + (#f #f) + (res + (let ((s (time-second + (subtract-duration (time-at-midnight (current-time)) + duration)))) + (delete #f (map (lambda (x) + (and (<= s (cdr x)) + (first x))) + generation-ctime-alist)))))) + + (cond ((string->generations str) + => + filter-generations) + ((string->duration str) + => + filter-by-duration) + (else #f))) + (define (find-packages-by-description rx) "Search in SYNOPSIS and DESCRIPTION using RX. Return a list of matching packages." @@ -441,6 +508,9 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) --roll-back roll back to the previous generation")) (display (_ " --search-paths display needed environment variable definitions")) + (display (_ " + -l, --list-generations[=PATTERN] + list generations matching PATTERN")) (newline) (display (_ " -p, --profile=PROFILE use PROFILE instead of the user's default profile")) @@ -500,6 +570,10 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) (option '("roll-back") #f #f (lambda (opt name arg result) (alist-cons 'roll-back? #t result))) + (option '(#\l "list-generations") #f #t + (lambda (opt name arg result) + (cons `(query list-generations ,(or arg "")) + result))) (option '("search-paths") #f #f (lambda (opt name arg result) (cons `(query search-paths) result))) @@ -558,7 +632,7 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) (define (guile-missing?) ;; Return #t if %GUILE-FOR-BUILD is not available yet. - (let ((out (derivation-path->output-path (%guile-for-build)))) + (let ((out (derivation->output-path (%guile-for-build)))) (not (valid-path? (%store) out)))) (define newest-available-packages @@ -617,7 +691,7 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) (case (version-compare candidate-version current-version) ((>) #t) ((<) #f) - ((=) (let ((candidate-path (derivation-path->output-path + ((=) (let ((candidate-path (derivation->output-path (package-derivation (%store) pkg)))) (not (string=? current-path candidate-path)))))) (#f #f))) @@ -808,7 +882,7 @@ more information.~%")) (match tuple ((name version sub-drv _ (deps ...)) (let ((output-path - (derivation-path->output-path + (derivation->output-path drv sub-drv))) `(,name ,version ,sub-drv ,output-path ,(canonicalize-deps deps)))))) @@ -841,12 +915,12 @@ more information.~%")) (or dry-run? (and (build-derivations (%store) drv) (let* ((prof-drv (profile-derivation (%store) packages)) - (prof (derivation-path->output-path prof-drv)) + (prof (derivation->output-path prof-drv)) (old-drv (profile-derivation (%store) (manifest-packages (profile-manifest profile)))) - (old-prof (derivation-path->output-path old-drv)) - (number (profile-number profile)) + (old-prof (derivation->output-path old-drv)) + (number (generation-number profile)) ;; Always use NUMBER + 1 for the new profile, ;; possibly overwriting a "previous future @@ -879,6 +953,40 @@ more information.~%")) ;; actually processed, #f otherwise. (let ((profile (assoc-ref opts 'profile))) (match (assoc-ref opts 'query) + (('list-generations pattern) + (define (list-generation number) + (begin + (format #t (_ "Generation ~a\t~a~%") number + (date->string + (time-utc->date + (generation-time profile number)) + "~b ~d ~Y ~T")) + (for-each (match-lambda + ((name version output location _) + (format #t " ~a\t~a\t~a\t~a~%" + name version output location))) + + ;; Show most recently installed packages last. + (reverse + (manifest-packages + (profile-manifest + (format #f "~a-~a-link" profile number))))) + (newline))) + + (cond ((not (file-exists? profile)) ; XXX: race condition + (leave (_ "profile '~a' does not exist~%") + profile)) + ((string-null? pattern) + (for-each list-generation + (generation-numbers profile))) + ((matching-generations pattern profile) + => + (cut for-each list-generation <>)) + (else + (leave (_ "invalid syntax: ~a~%") + pattern))) + #t) + (('list-installed regexp) (let* ((regexp (and regexp (make-regexp regexp))) (manifest (profile-manifest profile)) @@ -889,7 +997,9 @@ more information.~%")) (regexp-exec regexp name)) (format #t "~a\t~a\t~a\t~a~%" name (or version "?") output path)))) - installed) + + ;; Show most recently installed packages last. + (reverse installed)) #t)) (('list-available regexp) |