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guix build: Improve procedural decomposition.
* guix/scripts/build.scm (%store): Remove. (derivation-from-expression): Add 'store' parameter. Adjust caller accordingly. (register-root): New procedure, formerly within 'guix-build'. (options->derivations): New procedure, formerly inline within 'guix-build'. (guix-build): Adjust accordingly.
This commit is contained in:
Ludovic Courtès
parent
3f26bfc18a
commit
81fa80b245
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@ -35,10 +35,7 @@
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#:autoload (gnu packages) (find-best-packages-by-name)
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#:export (guix-build))
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(define %store
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(make-parameter #f))
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(define (derivation-from-expression str package-derivation
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(define (derivation-from-expression store str package-derivation
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system source?)
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"Read/eval STR and return the corresponding derivation path for SYSTEM.
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When SOURCE? is true and STR evaluates to a package, return the derivation of
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@ -49,12 +46,12 @@ derivation of a package."
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(if source?
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(let ((source (package-source p)))
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(if source
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(package-source-derivation (%store) source)
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(package-source-derivation store source)
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(leave (_ "package `~a' has no source~%")
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(package-name p))))
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(package-derivation (%store) p system)))
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(package-derivation store p system)))
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((? procedure? proc)
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(run-with-store (%store) (proc) #:system system))))
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(run-with-store store (proc) #:system system))))
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(define (specification->package spec)
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"Return a package matching SPEC. SPEC may be a package name, or a package
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@ -77,6 +74,30 @@ present, return the preferred newest version."
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name version)
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(leave (_ "~A: unknown package~%") name))))))
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(define (register-root store paths root)
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"Register ROOT as an indirect GC root for all of PATHS."
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(let* ((root (string-append (canonicalize-path (dirname root))
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"/" root)))
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(catch 'system-error
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(lambda ()
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(match paths
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((path)
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(symlink path root)
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(add-indirect-root store root))
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((paths ...)
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(fold (lambda (path count)
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(let ((root (string-append root
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"-"
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(number->string count))))
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(symlink path root)
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(add-indirect-root store root))
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(+ 1 count))
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0
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paths))))
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(lambda args
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(leave (_ "failed to create GC root `~a': ~a~%")
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root (strerror (system-error-errno args)))))))
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;;;
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;;; Command-line options.
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@ -193,6 +214,36 @@ Build the given PACKAGE-OR-DERIVATION and return their output paths.\n"))
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(lambda (opt name arg result)
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(alist-cons 'log-file? #t result)))))
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(define (options->derivations store opts)
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"Given OPTS, the result of 'args-fold', return a list of derivations to
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build."
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(define package->derivation
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(match (assoc-ref opts 'target)
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(#f package-derivation)
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(triplet
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(cut package-cross-derivation <> <> triplet <>))))
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(define src? (assoc-ref opts 'source?))
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(define sys (assoc-ref opts 'system))
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(filter-map (match-lambda
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(('expression . str)
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(derivation-from-expression store str package->derivation
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sys src?))
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(('argument . (? derivation-path? drv))
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(call-with-input-file drv read-derivation))
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(('argument . (? store-path?))
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;; Nothing to do; maybe for --log-file.
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#f)
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(('argument . (? string? x))
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(let ((p (specification->package x)))
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(if src?
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(let ((s (package-source p)))
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(package-source-derivation store s))
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(package->derivation store p sys))))
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(_ #f))
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opts))
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;;;
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;;; Entry point.
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@ -208,114 +259,65 @@ Build the given PACKAGE-OR-DERIVATION and return their output paths.\n"))
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(alist-cons 'argument arg result))
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%default-options))
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(define (register-root paths root)
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;; Register ROOT as an indirect GC root for all of PATHS.
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(let* ((root (string-append (canonicalize-path (dirname root))
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"/" root)))
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(catch 'system-error
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(lambda ()
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(match paths
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((path)
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(symlink path root)
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(add-indirect-root (%store) root))
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((paths ...)
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(fold (lambda (path count)
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(let ((root (string-append root
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"-"
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(number->string count))))
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(symlink path root)
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(add-indirect-root (%store) root))
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(+ 1 count))
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0
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paths))))
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(lambda args
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(leave (_ "failed to create GC root `~a': ~a~%")
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root (strerror (system-error-errno args)))))))
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(with-error-handling
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;; Ask for absolute file names so that .drv file names passed from the
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;; user to 'read-derivation' are absolute when it returns.
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(with-fluids ((%file-port-name-canonicalization 'absolute))
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(let ((opts (parse-options)))
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(define package->derivation
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(match (assoc-ref opts 'target)
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(#f package-derivation)
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(triplet
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(cut package-cross-derivation <> <> triplet <>))))
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(let* ((opts (parse-options))
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(store (open-connection))
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(drv (options->derivations store opts))
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(roots (filter-map (match-lambda
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(('gc-root . root) root)
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(_ #f))
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opts)))
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(parameterize ((%store (open-connection)))
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(let* ((src? (assoc-ref opts 'source?))
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(sys (assoc-ref opts 'system))
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(drv (filter-map (match-lambda
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(('expression . str)
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(derivation-from-expression
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str package->derivation sys src?))
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(('argument . (? derivation-path? drv))
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(call-with-input-file drv read-derivation))
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(('argument . (? store-path?))
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;; Nothing to do; maybe for --log-file.
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#f)
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(('argument . (? string? x))
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(let ((p (specification->package x)))
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(if src?
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(let ((s (package-source p)))
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(package-source-derivation
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(%store) s))
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(package->derivation (%store) p sys))))
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(_ #f))
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opts))
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(roots (filter-map (match-lambda
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(('gc-root . root) root)
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(_ #f))
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opts)))
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(unless (assoc-ref opts 'log-file?)
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(show-what-to-build store drv
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:dry-run? (assoc-ref opts 'dry-run?)))
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(unless (assoc-ref opts 'log-file?)
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(show-what-to-build (%store) drv
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:dry-run? (assoc-ref opts 'dry-run?)))
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;; TODO: Add more options.
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(set-build-options store
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#:keep-failed? (assoc-ref opts 'keep-failed?)
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#:build-cores (or (assoc-ref opts 'cores) 0)
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#:fallback? (assoc-ref opts 'fallback?)
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:max-silent-time (assoc-ref opts 'max-silent-time)
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#:verbosity (assoc-ref opts 'verbosity))
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;; TODO: Add more options.
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(set-build-options (%store)
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#:keep-failed? (assoc-ref opts 'keep-failed?)
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#:build-cores (or (assoc-ref opts 'cores) 0)
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#:fallback? (assoc-ref opts 'fallback?)
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:max-silent-time (assoc-ref opts 'max-silent-time)
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#:verbosity (assoc-ref opts 'verbosity))
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(cond ((assoc-ref opts 'log-file?)
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(for-each (lambda (file)
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(let ((log (log-file (%store) file)))
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(if log
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(format #t "~a~%" log)
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(leave (_ "no build log for '~a'~%")
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file))))
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(delete-duplicates
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(append (map derivation-file-name drv)
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(filter-map (match-lambda
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(('argument
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. (? store-path? file))
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file)
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(_ #f))
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opts)))))
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((assoc-ref opts 'derivations-only?)
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(format #t "~{~a~%~}" (map derivation-file-name drv))
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(for-each (cut register-root <> <>)
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(map (compose list derivation-file-name) drv)
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roots))
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((not (assoc-ref opts 'dry-run?))
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(and (build-derivations (%store) drv)
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(for-each (lambda (d)
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(format #t "~{~a~%~}"
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(map (match-lambda
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((out-name . out)
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(derivation->output-path
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d out-name)))
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(derivation-outputs d))))
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drv)
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(for-each (cut register-root <> <>)
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(map (lambda (drv)
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(map cdr
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(derivation->output-paths drv)))
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drv)
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roots))))))))))
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(cond ((assoc-ref opts 'log-file?)
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(for-each (lambda (file)
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(let ((log (log-file store file)))
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(if log
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(format #t "~a~%" log)
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(leave (_ "no build log for '~a'~%")
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file))))
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(delete-duplicates
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(append (map derivation-file-name drv)
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(filter-map (match-lambda
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(('argument
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. (? store-path? file))
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file)
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(_ #f))
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opts)))))
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((assoc-ref opts 'derivations-only?)
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(format #t "~{~a~%~}" (map derivation-file-name drv))
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(for-each (cut register-root store <> <>)
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(map (compose list derivation-file-name) drv)
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roots))
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((not (assoc-ref opts 'dry-run?))
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(and (build-derivations store drv)
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(for-each (lambda (d)
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(format #t "~{~a~%~}"
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(map (match-lambda
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((out-name . out)
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(derivation->output-path
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d out-name)))
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(derivation-outputs d))))
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drv)
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(for-each (cut register-root store <> <>)
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(map (lambda (drv)
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(map cdr
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(derivation->output-paths drv)))
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drv)
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roots))))))))
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