#:use-module (guix packages)
#:use-module (guix profiles)
#:use-module (guix derivations)
- #:use-module (guix combinators)
#:use-module (guix build-system)
#:use-module (guix serialization)
#:use-module ((guix licenses) #:select (license? license-name))
#:use-module ((guix build syscalls)
- #:select (free-disk-space terminal-columns))
+ #:select (free-disk-space terminal-columns
+ terminal-rows))
#:use-module ((guix build utils)
;; XXX: All we need are the bindings related to
;; '&invoke-error'. However, to work around the bug described
string->recutils
package->recutils
package-specification->name+version+output
+
relevance
package-relevance
+ display-search-results
+
string->generations
string->duration
matching-generations
(display-hint (format #f (G_ "Did you forget @code{(use-modules ~a)}?")
(module-name module))))))))
+(define (check-module-matches-file module file)
+ "Check whether FILE starts with 'define-module MODULE' and print a hint if
+it doesn't."
+ ;; This is a common mistake when people start writing their own package
+ ;; definitions and try loading them with 'guix build -L …', so help them
+ ;; diagnose the problem.
+ (define (hint)
+ (display-hint (format #f (G_ "File @file{~a} should probably start with:
+
+@example\n(define-module ~a)\n@end example")
+ file module)))
+
+ (catch 'system-error
+ (lambda ()
+ (let* ((sexp (call-with-input-file file read))
+ (loc (and (pair? sexp)
+ (source-properties->location (source-properties sexp)))))
+ (match sexp
+ (('define-module (names ...) _ ...)
+ (unless (equal? module names)
+ (warning loc
+ (G_ "module name ~a does not match file name '~a'~%")
+ names (module->source-file-name module))
+ (hint)))
+ ((? eof-object?)
+ (warning (G_ "~a: file is empty~%") file))
+ (else
+ (hint)))))
+ (const #f)))
+
(define* (report-load-error file args #:optional frame)
"Report the failure to load FILE, a user-provided Scheme file.
ARGS is the list of arguments received by the 'throw' handler."
;; above and need to be printed with 'print-exception'.
(print-exception (current-error-port) frame key args))))))
-(define (warn-about-load-error file args) ;FIXME: factorize with ↑
+(define (warn-about-load-error file module args) ;FIXME: factorize with ↑
"Report the failure to load FILE, a user-provided Scheme file, without
exiting. ARGS is the list of arguments received by the 'throw' handler."
(match args
(('system-error . rest)
(let ((err (system-error-errno args)))
- (warning (G_ "failed to load '~a': ~a~%") file (strerror err))))
+ (warning (G_ "failed to load '~a': ~a~%") module (strerror err))))
(('syntax-error proc message properties form . rest)
(let ((loc (source-properties->location properties)))
(warning loc (G_ "~a~%") message)))
+ (('unbound-variable _ ...)
+ (report-unbound-variable-error args))
(('srfi-34 obj)
(if (message-condition? obj)
(warning (G_ "failed to load '~a': ~a~%")
(warning (G_ "failed to load '~a': exception thrown: ~s~%")
file obj)))
((error args ...)
- (warning (G_ "failed to load '~a':~%") file)
- (apply display-error #f (current-error-port) args))))
+ (warning (G_ "failed to load '~a':~%") module)
+ (apply display-error #f (current-error-port) args)
+ (check-module-matches-file module file))))
(define (call-with-unbound-variable-handling thunk)
(define tag
str))))
(define (show-derivation-outputs derivation)
- "Show the output file names of DERIVATION."
- (format #t "~{~a~%~}"
- (map (match-lambda
- ((out-name . out)
- (derivation->output-path derivation out-name)))
- (derivation-outputs derivation))))
+ "Show the output file names of DERIVATION, which can be a derivation or a
+derivation input."
+ (define (show-outputs derivation outputs)
+ (format #t "~{~a~%~}"
+ (map (cut derivation->output-path derivation <>)
+ outputs)))
+
+ (match derivation
+ ((? derivation?)
+ (show-outputs derivation (derivation-output-names derivation)))
+ ((? derivation-input? input)
+ (show-outputs (derivation-input-derivation input)
+ (derivation-input-sub-derivations input)))))
(define* (check-available-space need
#:optional (directory (%store-prefix)))
#:key dry-run? (use-substitutes? #t)
(mode (build-mode normal)))
"Show what will or would (depending on DRY-RUN?) be built in realizing the
-derivations listed in DRV using MODE, a 'build-mode' value. Return #t if
-there's something to build, #f otherwise. When USE-SUBSTITUTES?, check and
-report what is prerequisites are available for download."
+derivations listed in DRV using MODE, a 'build-mode' value. The elements of
+DRV can be either derivations or derivation inputs.
+
+Return #t if there's something to build, #f otherwise. When USE-SUBSTITUTES?,
+check and report what is prerequisites are available for download."
+ (define inputs
+ (map (match-lambda
+ ((? derivation? drv) (derivation-input drv))
+ ((? derivation-input? input) input))
+ drv))
+
(define substitutable-info
;; Call 'substitutation-oracle' upfront so we don't end up launching the
;; substituter many times. This makes a big difference, especially when
;; DRV is a long list as is the case with 'guix environment'.
(if use-substitutes?
- (substitution-oracle store drv #:mode mode)
+ (substitution-oracle store inputs #:mode mode)
(const #f)))
- (define (built-or-substitutable? drv)
- (or (null? (derivation-outputs drv))
- (let ((out (derivation->output-path drv))) ;XXX: assume "out" exists
- (or (valid-path? store out)
- (substitutable-info out)))))
-
(let*-values (((build download)
- (fold2 (lambda (drv build download)
- (let-values (((b d)
- (derivation-prerequisites-to-build
- store drv
- #:mode mode
- #:substitutable-info
- substitutable-info)))
- (values (append b build)
- (append d download))))
- '() '()
- drv))
- ((build) ; add the DRV themselves
- (delete-duplicates
- (append (map derivation-file-name
- (remove built-or-substitutable? drv))
- (map derivation-input-path build))))
- ((download) ; add the references of DOWNLOAD
- (if use-substitutes?
- (delete-duplicates
- (append download
- (filter-map (lambda (item)
- (if (valid-path? store item)
- #f
- (substitutable-info item)))
- (append-map
- substitutable-references
- download))))
- download))
+ (derivation-build-plan store inputs
+ #:mode mode
+ #:substitutable-info
+ substitutable-info))
((graft hook build)
- (match (fold (lambda (file acc)
- (let ((drv (read-derivation-from-file file)))
+ (match (fold (lambda (drv acc)
+ (let ((file (derivation-file-name drv)))
(match acc
((#:graft graft #:hook hook #:build build)
(cond
extra-fields)
(newline port))
+\f
+;;;
+;;; Searching.
+;;;
+
(define (relevance obj regexps metrics)
"Compute a \"relevance score\" for OBJ as a function of its number of
matches of REGEXPS and accordingly to METRICS. METRICS is list of
A score of zero means that OBJ does not match any of REGEXPS. The higher the
score, the more relevant OBJ is to REGEXPS."
(define (score str)
- (let ((counts (map (lambda (regexp)
- (match (fold-matches regexp str '() cons)
- (() 0)
- ((m) (if (string=? (match:substring m) str)
- 5 ;exact match
- 1))
- (lst (length lst))))
- regexps)))
- ;; Compute a score that's proportional to the number of regexps matched
- ;; and to the number of matches for each regexp.
- (* (length counts) (reduce + 0 counts))))
+ (define scores
+ (map (lambda (regexp)
+ (fold-matches regexp str 0
+ (lambda (m score)
+ (+ score
+ (if (string=? (match:substring m) str)
+ 5 ;exact match
+ 1)))))
+ regexps))
+
+ ;; Return zero if one of REGEXPS doesn't match.
+ (if (any zero? scores)
+ 0
+ (reduce + 0 scores)))
(fold (lambda (metric relevance)
(match metric
zero means that PACKAGE does not match any of REGEXPS."
(relevance package regexps %package-metrics))
+(define* (display-search-results matches port
+ #:key
+ (command "guix search")
+ (print package->recutils))
+ "Display MATCHES, a list of object/score pairs, by calling PRINT on each of
+them. If PORT is a terminal, print at most a full screen of results."
+ (define first-line
+ (port-line port))
+
+ (define max-rows
+ (and first-line (isatty? port)
+ (terminal-rows port)))
+
+ (define (line-count str)
+ (string-count str #\newline))
+
+ (let loop ((matches matches))
+ (match matches
+ (((package . score) rest ...)
+ (let ((text (call-with-output-string
+ (lambda (port)
+ (print package port
+ #:extra-fields
+ `((relevance . ,score)))))))
+ (if (and max-rows
+ (> (port-line port) first-line) ;print at least one result
+ (> (+ 4 (line-count text) (port-line port))
+ max-rows))
+ (unless (null? rest)
+ (display-hint (format #f (G_ "Run @code{~a ... | less} \
+to view all the results.")
+ command)))
+ (begin
+ (display text port)
+ (loop rest)))))
+ (()
+ #t))))
+
+\f
(define (string->generations str)
"Return the list of generations matching a pattern in STR. This function
accepts the following patterns: \"1\", \"1,2,3\", \"1..9\", \"1..\", \"..9\"."
((string->duration str)
=>
filter-by-duration)
- (else #f)))
+ (else
+ (raise
+ (condition (&message
+ (message (format #f (G_ "invalid syntax: ~a~%")
+ str))))))))
(define (display-generation profile number)
"Display a one-line summary of generation NUMBER of PROFILE."
HCoop / jackhill / guix / guix.git / blobdiff