guix package: Formalize the list of actions.
* guix/scripts/package.scm (roll-back-action, switch-generation-action) (delete-generations-action, manifest-action): New procedures. (%actions): New variable. * guix/scripts/package.scm (guix-package)[process-action]: Rewrite to traverse %ACTIONS.
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Ludovic Courtès
parent
50dc193e27
commit
590558953b
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@ -624,6 +624,11 @@ doesn't need it."
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(add-indirect-root store absolute))
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;;;
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;;; Queries and actions.
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;;;
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(define (process-query opts)
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"Process any query specified by OPTS. Return #t when a query was actually
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processed, #f otherwise."
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@ -729,6 +734,58 @@ processed, #f otherwise."
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(_ #f))))
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(define* (roll-back-action store profile arg opts
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#:key dry-run?)
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"Roll back PROFILE to its previous generation."
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(unless dry-run?
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(roll-back* store profile)))
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(define* (switch-generation-action store profile spec opts
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#:key dry-run?)
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"Switch PROFILE to the generation specified by SPEC."
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(unless dry-run?
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(let* ((number (string->number spec))
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(number (and number
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(case (string-ref spec 0)
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((#\+ #\-)
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(relative-generation profile number))
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(else number)))))
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(if number
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(switch-to-generation* profile number)
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(leave (_ "cannot switch to generation '~a'~%") spec)))))
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(define* (delete-generations-action store profile pattern opts
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#:key dry-run?)
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"Delete PROFILE's generations that match PATTERN."
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(unless dry-run?
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(delete-matching-generations store profile pattern)))
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(define* (manifest-action store profile file opts
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#:key dry-run?)
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"Change PROFILE to contain the packages specified in FILE."
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(let* ((user-module (make-user-module '((guix profiles) (gnu))))
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(manifest (load* file user-module))
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(bootstrap? (assoc-ref opts 'bootstrap?))
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(substitutes? (assoc-ref opts 'substitutes?)))
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(if dry-run?
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(format #t (_ "would install new manifest from '~a' with ~d entries~%")
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file (length (manifest-entries manifest)))
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(format #t (_ "installing new manifest from '~a' with ~d entries~%")
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file (length (manifest-entries manifest))))
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(build-and-use-profile store profile manifest
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#:bootstrap? bootstrap?
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#:use-substitutes? substitutes?
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#:dry-run? dry-run?)))
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(define %actions
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;; List of actions that may be processed. The car of each pair is the
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;; action's symbol in the option list; the cdr is the action's procedure.
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`((roll-back? . ,roll-back-action)
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(switch-generation . ,switch-generation-action)
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(delete-generations . ,delete-generations-action)
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(manifest . ,manifest-action)))
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;;;
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;;; Entry point.
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@ -749,62 +806,22 @@ processed, #f otherwise."
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(define substitutes? (assoc-ref opts 'substitutes?))
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(define profile (or (assoc-ref opts 'profile) %current-profile))
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;; First roll back if asked to.
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(cond ((and (assoc-ref opts 'roll-back?)
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(not dry-run?))
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(roll-back* (%store) profile)
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(process-actions (alist-delete 'roll-back? opts)))
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((and (assoc-ref opts 'switch-generation)
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(not dry-run?))
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(for-each
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(match-lambda
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(('switch-generation . pattern)
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(let* ((number (string->number pattern))
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(number (and number
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(case (string-ref pattern 0)
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((#\+ #\-)
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(relative-generation profile number))
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(else number)))))
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(if number
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(switch-to-generation* profile number)
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(leave (_ "cannot switch to generation '~a'~%")
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pattern)))
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(process-actions (alist-delete 'switch-generation opts)))
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(_ #f))
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opts))
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((and (assoc-ref opts 'delete-generations)
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(not dry-run?))
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(for-each
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(match-lambda
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(('delete-generations . pattern)
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(delete-matching-generations (%store) profile pattern)
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;; First, process roll-backs, generation removals, etc.
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(for-each (match-lambda
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((key . arg)
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(and=> (assoc-ref %actions key)
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(lambda (proc)
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(proc (%store) profile arg opts
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#:dry-run? dry-run?)))))
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opts)
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(process-actions
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(alist-delete 'delete-generations opts)))
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(_ #f))
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opts))
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((assoc-ref opts 'manifest)
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(let* ((file-name (assoc-ref opts 'manifest))
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(user-module (make-user-module '((guix profiles)
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(gnu))))
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(manifest (load* file-name user-module)))
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(if dry-run?
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(format #t (_ "would install new manifest from '~a' with ~d entries~%")
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file-name (length (manifest-entries manifest)))
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(format #t (_ "installing new manifest from '~a' with ~d entries~%")
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file-name (length (manifest-entries manifest))))
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(build-and-use-profile (%store) profile manifest
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#:bootstrap? bootstrap?
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#:use-substitutes? substitutes?
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#:dry-run? dry-run?)))
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(else
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;; Then, process normal package installation/removal/upgrade.
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(let* ((manifest (profile-manifest profile))
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(install (options->installable opts manifest))
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(remove (options->removable opts manifest))
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(transaction (manifest-transaction (install install)
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(remove remove)))
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(new (manifest-perform-transaction
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manifest transaction)))
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(new (manifest-perform-transaction manifest transaction)))
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(unless (and (null? install) (null? remove))
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(show-manifest-transaction (%store) manifest transaction
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@ -812,7 +829,7 @@ processed, #f otherwise."
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(build-and-use-profile (%store) profile new
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#:bootstrap? bootstrap?
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#:use-substitutes? substitutes?
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#:dry-run? dry-run?))))))
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#:dry-run? dry-run?))))
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(let ((opts (parse-command-line args %options (list %default-options #f)
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#:argument-handler handle-argument)))
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