-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
-;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (gnu packages)
- #:use-module (guix packages)
- #:use-module (guix utils)
- #:use-module (ice-9 ftw)
- #:use-module (ice-9 vlist)
- #:use-module (srfi srfi-1)
- #:use-module (srfi srfi-26)
- #:use-module (srfi srfi-39)
- #:export (search-patch
- search-bootstrap-binary
- %patch-directory
- %bootstrap-binaries-path
- fold-packages
- find-packages-by-name))
-
-;;; Commentary:
-;;;
-;;; General utilities for the software distribution---i.e., the modules under
-;;; (gnu packages ...).
-;;;
-;;; Code:
-
-(define _ (cut gettext <> "guix"))
-
-;; By default, we store patches and bootstrap binaries alongside Guile
-;; modules. This is so that these extra files can be found without
-;; requiring a special setup, such as a specific installation directory
-;; and an extra environment variable. One advantage of this setup is
-;; that everything just works in an auto-compilation setting.
-
-(define %patch-path
- (make-parameter
- (map (cut string-append <> "/gnu/packages/patches")
- %load-path)))
-
-(define %bootstrap-binaries-path
- (make-parameter
- (map (cut string-append <> "/gnu/packages/bootstrap")
- %load-path)))
-
-(define (search-patch file-name)
- "Search the patch FILE-NAME."
- (search-path (%patch-path) file-name))
-
-(define (search-bootstrap-binary file-name system)
- "Search the bootstrap binary FILE-NAME for SYSTEM."
- (search-path (%bootstrap-binaries-path)
- (string-append system "/" file-name)))
-
-(define %distro-module-directory
- ;; Absolute path of the (gnu packages ...) module root.
- (string-append (dirname (search-path %load-path "gnu/packages.scm"))
- "/packages"))
-
-(define (package-files)
- "Return the list of files that implement distro modules."
- (define prefix-len
- (string-length
- (dirname (dirname (search-path %load-path "gnu/packages.scm")))))
-
- (file-system-fold (const #t) ; enter?
- (lambda (path stat result) ; leaf
- (if (string-suffix? ".scm" path)
- (cons (substring path prefix-len) result)
- result))
- (lambda (path stat result) ; down
- result)
- (lambda (path stat result) ; up
- result)
- (const #f) ; skip
- (lambda (path stat errno result)
- (format (current-error-port)
- (_ "warning: cannot access `~a': ~a~%")
- path (strerror errno))
- result)
- '()
- %distro-module-directory
- stat))
-
-(define (package-modules)
- "Return the list of modules that provide packages for the distribution."
- (define not-slash
- (char-set-complement (char-set #\/)))
-
- (filter-map (lambda (path)
- (let ((name (map string->symbol
- (string-tokenize (string-drop-right path 4)
- not-slash))))
- (false-if-exception (resolve-interface name))))
- (package-files)))
-
-(define (fold2 f seed1 seed2 lst)
- (if (null? lst)
- (values seed1 seed2)
- (call-with-values
- (lambda () (f (car lst) seed1 seed2))
- (lambda (seed1 seed2)
- (fold2 f seed1 seed2 (cdr lst))))))
-
-(define (fold-packages proc init)
- "Call (PROC PACKAGE RESULT) for each available package, using INIT as
-the initial value of RESULT. It is guaranteed to never traverse the
-same package twice."
- (identity ; discard second return value
- (fold2 (lambda (module result seen)
- (fold2 (lambda (var result seen)
- (if (and (package? var)
- (not (vhash-assq var seen)))
- (values (proc var result)
- (vhash-consq var #t seen))
- (values result seen)))
- result
- seen
- (module-map (lambda (sym var)
- (false-if-exception (variable-ref var)))
- module)))
- init
- vlist-null
- (package-modules))))
-
-(define* (find-packages-by-name name #:optional version)
- "Return the list of packages with the given NAME. If VERSION is not #f,
-then only return packages whose version is equal to VERSION."
- (define right-package?
- (if version
- (lambda (p)
- (and (string=? (package-name p) name)
- (string=? (package-version p) version)))
- (lambda (p)
- (string=? (package-name p) name))))
-
- (fold-packages (lambda (package result)
- (if (right-package? package)
- (cons package result)
- result))
- '()))
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
+;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
+;;; Copyright © 2016, 2017 Alex Kost <alezost@gmail.com>
+;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu packages)
+ #:use-module (guix packages)
+ #:use-module (guix ui)
+ #:use-module (guix utils)
+ #:use-module (guix discovery)
+ #:use-module (guix memoization)
+ #:use-module ((guix build utils)
+ #:select ((package-name->name+version
+ . hyphen-separated-name->name+version)))
+ #:autoload (guix profiles) (packages->manifest)
+ #:use-module (ice-9 vlist)
+ #:use-module (ice-9 match)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-11)
+ #:use-module (srfi srfi-26)
+ #:use-module (srfi srfi-34)
+ #:use-module (srfi srfi-35)
+ #:use-module (srfi srfi-39)
+ #:export (search-patch
+ search-patches
+ search-auxiliary-file
+ search-bootstrap-binary
+ %patch-path
+ %auxiliary-files-path
+ %bootstrap-binaries-path
+ %package-module-path
+
+ fold-packages
+
+ find-packages-by-name
+ find-best-packages-by-name
+ find-newest-available-packages
+
+ specification->package
+ specification->package+output
+ specifications->manifest))
+
+;;; Commentary:
+;;;
+;;; General utilities for the software distribution---i.e., the modules under
+;;; (gnu packages ...).
+;;;
+;;; Code:
+
+;; By default, we store patches, auxiliary files and bootstrap binaries
+;; alongside Guile modules. This is so that these extra files can be
+;; found without requiring a special setup, such as a specific
+;; installation directory and an extra environment variable. One
+;; advantage of this setup is that everything just works in an
+;; auto-compilation setting.
+
+(define %bootstrap-binaries-path
+ (make-parameter
+ (map (cut string-append <> "/gnu/packages/bootstrap")
+ %load-path)))
+
+(define %auxiliary-files-path
+ (make-parameter
+ (map (cut string-append <> "/gnu/packages/aux-files")
+ %load-path)))
+
+(define (search-auxiliary-file file-name)
+ "Search the auxiliary FILE-NAME. Return #f if not found."
+ (search-path (%auxiliary-files-path) file-name))
+
+(define (search-patch file-name)
+ "Search the patch FILE-NAME. Raise an error if not found."
+ (or (search-path (%patch-path) file-name)
+ (raise (condition
+ (&message (message (format #f (G_ "~a: patch not found")
+ file-name)))))))
+
+(define-syntax-rule (search-patches file-name ...)
+ "Return the list of absolute file names corresponding to each
+FILE-NAME found in %PATCH-PATH."
+ (list (search-patch file-name) ...))
+
+(define (search-bootstrap-binary file-name system)
+ "Search the bootstrap binary FILE-NAME for SYSTEM. Raise an error if not
+found."
+ (or (search-path (%bootstrap-binaries-path)
+ (string-append system "/" file-name))
+ (raise (condition
+ (&message
+ (message
+ (format #f (G_ "could not find bootstrap binary '~a' \
+for system '~a'")
+ file-name system)))))))
+
+(define %distro-root-directory
+ ;; Absolute file name of the module hierarchy. Since (gnu packages …) might
+ ;; live in a directory different from (guix), try to get the best match.
+ (letrec-syntax ((dirname* (syntax-rules ()
+ ((_ file)
+ (dirname file))
+ ((_ file head tail ...)
+ (dirname (dirname* file tail ...)))))
+ (try (syntax-rules ()
+ ((_ (file things ...) rest ...)
+ (match (search-path %load-path file)
+ (#f
+ (try rest ...))
+ (absolute
+ (dirname* absolute things ...))))
+ ((_)
+ #f))))
+ (try ("gnu/packages/base.scm" gnu/ packages/)
+ ("gnu/packages.scm" gnu/)
+ ("guix.scm"))))
+
+(define %package-module-path
+ ;; Search path for package modules. Each item must be either a directory
+ ;; name or a pair whose car is a directory and whose cdr is a sub-directory
+ ;; to narrow the search.
+ (let* ((not-colon (char-set-complement (char-set #\:)))
+ (environment (string-tokenize (or (getenv "GUIX_PACKAGE_PATH") "")
+ not-colon)))
+ ;; Automatically add items from $GUIX_PACKAGE_PATH to Guile's search path.
+ (for-each (lambda (directory)
+ (set! %load-path (cons directory %load-path))
+ (set! %load-compiled-path
+ (cons directory %load-compiled-path)))
+ environment)
+
+ (make-parameter
+ (append environment `((,%distro-root-directory . "gnu/packages"))))))
+
+(define %patch-path
+ ;; Define it after '%package-module-path' so that '%load-path' contains user
+ ;; directories, allowing patches in $GUIX_PACKAGE_PATH to be found.
+ (make-parameter
+ (map (lambda (directory)
+ (if (string=? directory %distro-root-directory)
+ (string-append directory "/gnu/packages/patches")
+ directory))
+ %load-path)))
+
+(define* (fold-packages proc init
+ #:optional
+ (modules (all-modules (%package-module-path)
+ #:warn
+ warn-about-load-error))
+ #:key (select? (negate hidden-package?)))
+ "Call (PROC PACKAGE RESULT) for each available package defined in one of
+MODULES that matches SELECT?, using INIT as the initial value of RESULT. It
+is guaranteed to never traverse the same package twice."
+ (fold-module-public-variables (lambda (object result)
+ (if (and (package? object) (select? object))
+ (proc object result)
+ result))
+ init
+ modules))
+
+(define find-packages-by-name
+ (let ((packages (delay
+ (fold-packages (lambda (p r)
+ (vhash-cons (package-name p) p r))
+ vlist-null)))
+ (version>? (lambda (p1 p2)
+ (version>? (package-version p1) (package-version p2)))))
+ (lambda* (name #:optional version)
+ "Return the list of packages with the given NAME. If VERSION is not #f,
+then only return packages whose version is prefixed by VERSION, sorted in
+decreasing version order."
+ (let ((matching (sort (vhash-fold* cons '() name (force packages))
+ version>?)))
+ (if version
+ (filter (lambda (package)
+ (version-prefix? version (package-version package)))
+ matching)
+ matching)))))
+
+(define find-newest-available-packages
+ (mlambda ()
+ "Return a vhash keyed by package names, and with
+associated values of the form
+
+ (newest-version newest-package ...)
+
+where the preferred package is listed first."
+
+ ;; FIXME: Currently, the preferred package is whichever one
+ ;; was found last by 'fold-packages'. Find a better solution.
+ (fold-packages (lambda (p r)
+ (let ((name (package-name p))
+ (version (package-version p)))
+ (match (vhash-assoc name r)
+ ((_ newest-so-far . pkgs)
+ (case (version-compare version newest-so-far)
+ ((>) (vhash-cons name `(,version ,p) r))
+ ((=) (vhash-cons name `(,version ,p ,@pkgs) r))
+ ((<) r)))
+ (#f (vhash-cons name `(,version ,p) r)))))
+ vlist-null)))
+
+(define (find-best-packages-by-name name version)
+ "If version is #f, return the list of packages named NAME with the highest
+version numbers; otherwise, return the list of packages named NAME and at
+VERSION."
+ (if version
+ (find-packages-by-name name version)
+ (match (vhash-assoc name (find-newest-available-packages))
+ ((_ version pkgs ...) pkgs)
+ (#f '()))))
+
+\f
+(define %sigint-prompt
+ ;; The prompt to jump to upon SIGINT.
+ (make-prompt-tag "interruptible"))
+
+(define (call-with-sigint-handler thunk handler)
+ "Call THUNK and return its value. Upon SIGINT, call HANDLER with the signal
+number in the context of the continuation of the call to this function, and
+return its return value."
+ (call-with-prompt %sigint-prompt
+ (lambda ()
+ (sigaction SIGINT
+ (lambda (signum)
+ (sigaction SIGINT SIG_DFL)
+ (abort-to-prompt %sigint-prompt signum)))
+ (dynamic-wind
+ (const #t)
+ thunk
+ (cut sigaction SIGINT SIG_DFL)))
+ (lambda (k signum)
+ (handler signum))))
+
+\f
+;;;
+;;; Package specification.
+;;;
+
+(define* (%find-package spec name version)
+ (match (find-best-packages-by-name name version)
+ ((pkg . pkg*)
+ (unless (null? pkg*)
+ (warning (G_ "ambiguous package specification `~a'~%") spec)
+ (warning (G_ "choosing ~a@~a from ~a~%")
+ (package-name pkg) (package-version pkg)
+ (location->string (package-location pkg))))
+ (match (package-superseded pkg)
+ ((? package? new)
+ (info (G_ "package '~a' has been superseded by '~a'~%")
+ (package-name pkg) (package-name new))
+ new)
+ (#f
+ pkg)))
+ (x
+ (if version
+ (leave (G_ "~A: package not found for version ~a~%") name version)
+ (leave (G_ "~A: unknown package~%") name)))))
+
+(define (specification->package spec)
+ "Return a package matching SPEC. SPEC may be a package name, or a package
+name followed by an at-sign and a version number. If the version number is not
+present, return the preferred newest version."
+ (let-values (((name version) (package-name->name+version spec)))
+ (%find-package spec name version)))
+
+(define* (specification->package+output spec #:optional (output "out"))
+ "Return the package and output specified by SPEC, or #f and #f; SPEC may
+optionally contain a version number and an output name, as in these examples:
+
+ guile
+ guile@2.0.9
+ guile:debug
+ guile@2.0.9:debug
+
+If SPEC does not specify a version number, return the preferred newest
+version; if SPEC does not specify an output, return OUTPUT."
+ (let-values (((name version sub-drv)
+ (package-specification->name+version+output spec output)))
+ (match (%find-package spec name version)
+ (#f
+ (values #f #f))
+ (package
+ (if (member sub-drv (package-outputs package))
+ (values package sub-drv)
+ (leave (G_ "package `~a' lacks output `~a'~%")
+ (package-full-name package)
+ sub-drv))))))
+
+(define (specifications->manifest specs)
+ "Given SPECS, a list of specifications such as \"emacs@25.2\" or
+\"guile:debug\", return a profile manifest."
+ ;; This procedure exists mostly so users of 'guix package -m' don't have to
+ ;; fiddle with multiple-value returns.
+ (packages->manifest
+ (map (compose list specification->package+output) specs)))
HCoop / jackhill / guix / guix.git / blobdiff