373e7ac4f9
Fixes <https://issues.guix.gnu.org/49697>. Reported by Philippe Swartvagher <philippe.swartvagher@inria.fr>. * guix/transformations.scm (patched-source): New procedure. (transform-package-patches)[package-with-extra-patches]: Use it when (package-source p) is not an origin. * tests/transformations.scm ("options->transformation, with-commit + with-patch"): New test.
766 lines
29 KiB
Scheme
766 lines
29 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
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;;; Copyright © 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
|
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;;; the Free Software Foundation; either version 3 of the License, or (at
|
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
|
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix transformations)
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#:use-module (guix i18n)
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#:use-module (guix store)
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#:use-module (guix packages)
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#:use-module (guix profiles)
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#:use-module (guix diagnostics)
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#:autoload (guix download) (download-to-store)
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#:autoload (guix git-download) (git-reference? git-reference-url)
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#:autoload (guix git) (git-checkout git-checkout? git-checkout-url)
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#:autoload (guix upstream) (package-latest-release
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upstream-source-version
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upstream-source-signature-urls)
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#:use-module (guix utils)
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#:use-module (guix memoization)
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#:use-module (guix gexp)
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;; Use the procedure that destructures "NAME-VERSION" forms.
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#:use-module ((guix build utils)
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#:select ((package-name->name+version
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. hyphen-package-name->name+version)))
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-37)
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#:use-module (ice-9 match)
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#:use-module (ice-9 vlist)
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#:export (options->transformation
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manifest-entry-with-transformations
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show-transformation-options-help
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%transformation-options))
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;;; Commentary:
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;;;
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;;; This module implements "package transformation options"---tools for
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;;; package graph rewriting. It contains the graph rewriting logic, but also
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;;; the tip of its user interface: command-line option handling.
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;;;
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;;; Code:
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(module-autoload! (current-module) '(gnu packages)
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'(specification->package))
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(define (numeric-extension? file-name)
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"Return true if FILE-NAME ends with digits."
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(string-every char-set:hex-digit (file-extension file-name)))
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(define (tarball-base-name file-name)
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"Return the \"base\" of FILE-NAME, removing '.tar.gz' or similar
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extensions."
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;; TODO: Factorize.
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(cond ((not (file-extension file-name))
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file-name)
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((numeric-extension? file-name)
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file-name)
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((string=? (file-extension file-name) "tar")
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(file-sans-extension file-name))
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((file-extension file-name)
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=>
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(match-lambda
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("scm" file-name)
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(_ (tarball-base-name (file-sans-extension file-name)))))
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(else
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file-name)))
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;; Files to be downloaded.
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(define-record-type <downloaded-file>
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(downloaded-file uri recursive?)
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downloaded-file?
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(uri downloaded-file-uri)
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(recursive? downloaded-file-recursive?))
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(define download-to-store*
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(store-lift download-to-store))
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(define-gexp-compiler (compile-downloaded-file (file <downloaded-file>)
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system target)
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"Download FILE and return the result as a store item."
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(match file
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(($ <downloaded-file> uri recursive?)
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(download-to-store* uri #:recursive? recursive?))))
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(define* (package-with-source p uri #:optional version)
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"Return a package based on P but with its source taken from URI. Extract
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the new package's version number from URI."
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(let ((base (tarball-base-name (basename uri))))
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(let-values (((_ version*)
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(hyphen-package-name->name+version base)))
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(package (inherit p)
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(version (or version version*
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(package-version p)))
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;; Use #:recursive? #t to allow for directories.
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(source (downloaded-file uri #t))))))
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;;;
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;;; Transformations.
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;;;
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(define (transform-package-source sources)
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"Return a transformation procedure that replaces package sources with the
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matching URIs given in SOURCES."
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(define new-sources
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(map (lambda (uri)
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(match (string-index uri #\=)
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(#f
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;; Determine the package name and version from URI.
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(call-with-values
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(lambda ()
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(hyphen-package-name->name+version
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(tarball-base-name (basename uri))))
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(lambda (name version)
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(list name version uri))))
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(index
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;; What's before INDEX is a "PKG@VER" or "PKG" spec.
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(call-with-values
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(lambda ()
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(package-name->name+version (string-take uri index)))
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(lambda (name version)
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(list name version
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(string-drop uri (+ 1 index))))))))
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sources))
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(lambda (obj)
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(let loop ((sources new-sources)
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(result '()))
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(match obj
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((? package? p)
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(match (assoc-ref sources (package-name p))
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((version source)
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(package-with-source p source version))
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(#f
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p)))
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(_
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obj)))))
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(define (evaluate-replacement-specs specs proc)
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"Parse SPECS, a list of strings like \"guile=guile@2.1\" and return a list
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of package spec/procedure pairs as expected by 'package-input-rewriting/spec'.
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PROC is called with the package to be replaced and its replacement according
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to SPECS. Raise an error if an element of SPECS uses invalid syntax, or if a
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package it refers to could not be found."
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(define not-equal
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(char-set-complement (char-set #\=)))
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(map (lambda (spec)
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(match (string-tokenize spec not-equal)
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((spec new)
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(cons spec
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(let ((new (specification->package new)))
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(lambda (old)
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(proc old new)))))
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(x
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(raise (formatted-message
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(G_ "invalid replacement specification: ~s")
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spec)))))
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specs))
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(define (transform-package-inputs replacement-specs)
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"Return a procedure that, when passed a package, replaces its direct
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dependencies according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is a list of
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strings like \"guile=guile@2.1\" meaning that, any dependency on a package
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called \"guile\" must be replaced with a dependency on a version 2.1 of
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\"guile\"."
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(let* ((replacements (evaluate-replacement-specs replacement-specs
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(lambda (old new)
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new)))
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(rewrite (package-input-rewriting/spec replacements)))
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(lambda (obj)
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(if (package? obj)
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(rewrite obj)
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obj))))
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(define (transform-package-inputs/graft replacement-specs)
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"Return a procedure that, when passed a package, replaces its direct
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dependencies according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is a list of
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strings like \"gnutls=gnutls@3.5.4\" meaning that packages are built using the
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current 'gnutls' package, after which version 3.5.4 is grafted onto them."
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(define (set-replacement old new)
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(package (inherit old) (replacement new)))
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(let* ((replacements (evaluate-replacement-specs replacement-specs
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set-replacement))
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(rewrite (package-input-rewriting/spec replacements)))
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(lambda (obj)
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(if (package? obj)
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(rewrite obj)
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obj))))
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(define %not-equal
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(char-set-complement (char-set #\=)))
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(define (package-git-url package)
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"Return the URL of the Git repository for package, or raise an error if
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the source of PACKAGE is not fetched from a Git repository."
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(let ((source (package-source package)))
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(cond ((and (origin? source)
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(git-reference? (origin-uri source)))
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(git-reference-url (origin-uri source)))
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((git-checkout? source)
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(git-checkout-url source))
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(else
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(raise
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(formatted-message (G_ "the source of ~a is not a Git reference")
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(package-full-name package)))))))
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(define (evaluate-git-replacement-specs specs proc)
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"Parse SPECS, a list of strings like \"guile=stable-2.2\", and return a list
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of package pairs, where (PROC PACKAGE URL BRANCH-OR-COMMIT) returns the
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replacement package. Raise an error if an element of SPECS uses invalid
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syntax, or if a package it refers to could not be found."
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(map (lambda (spec)
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(match (string-tokenize spec %not-equal)
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((spec branch-or-commit)
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(define (replace old)
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(let* ((source (package-source old))
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(url (package-git-url old)))
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(proc old url branch-or-commit)))
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(cons spec replace))
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(_
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(raise
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(formatted-message (G_ "invalid replacement specification: ~s")
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spec)))))
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specs))
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(define (transform-package-source-branch replacement-specs)
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"Return a procedure that, when passed a package, replaces its direct
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dependencies according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is a list of
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strings like \"guile-next=stable-3.0\" meaning that packages are built using
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'guile-next' from the latest commit on its 'stable-3.0' branch."
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(define (replace old url branch)
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(package
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(inherit old)
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(version (string-append "git." (string-map (match-lambda
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(#\/ #\-)
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(chr chr))
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branch)))
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(source (git-checkout (url url) (branch branch)
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(recursive? #t)))))
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(let* ((replacements (evaluate-git-replacement-specs replacement-specs
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replace))
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(rewrite (package-input-rewriting/spec replacements)))
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(lambda (obj)
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(if (package? obj)
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(rewrite obj)
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obj))))
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(define (transform-package-source-commit replacement-specs)
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"Return a procedure that, when passed a package, replaces its direct
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dependencies according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is a list of
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strings like \"guile-next=cabba9e\" meaning that packages are built using
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'guile-next' from commit 'cabba9e'."
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(define (replace old url commit)
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(package
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(inherit old)
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(version (if (and (> (string-length commit) 1)
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(string-prefix? "v" commit)
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(char-set-contains? char-set:digit
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(string-ref commit 1)))
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(string-drop commit 1) ;looks like a tag like "v1.0"
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(string-append "git."
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(if (< (string-length commit) 7)
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commit
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(string-take commit 7)))))
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(source (git-checkout (url url) (commit commit)
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(recursive? #t)))))
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(let* ((replacements (evaluate-git-replacement-specs replacement-specs
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replace))
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(rewrite (package-input-rewriting/spec replacements)))
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(lambda (obj)
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(if (package? obj)
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(rewrite obj)
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obj))))
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(define (transform-package-source-git-url replacement-specs)
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"Return a procedure that, when passed a package, replaces its dependencies
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according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is a list of strings like
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\"guile-json=https://gitthing.com/…\" meaning that packages are built using
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a checkout of the Git repository at the given URL."
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(define replacements
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(map (lambda (spec)
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(match (string-tokenize spec %not-equal)
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((spec url)
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(cons spec
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(lambda (old)
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(package
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(inherit old)
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(source (git-checkout (url url)
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(recursive? #t)))))))
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(_
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(raise
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(formatted-message
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(G_ "~a: invalid Git URL replacement specification")
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spec)))))
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replacement-specs))
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(define rewrite
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(package-input-rewriting/spec replacements))
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(lambda (obj)
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(if (package? obj)
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(rewrite obj)
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obj)))
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(define (package-dependents/spec top bottom)
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"Return the list of dependents of BOTTOM, a spec string, that are also
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dependencies of TOP, a package."
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(define-values (name version)
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(package-name->name+version bottom))
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(define dependent?
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(mlambda (p)
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(and (package? p)
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(or (and (string=? name (package-name p))
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(or (not version)
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(version-prefix? version (package-version p))))
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(match (bag-direct-inputs (package->bag p))
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(((labels dependencies . _) ...)
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(any dependent? dependencies)))))))
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(filter dependent? (package-closure (list top))))
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(define (package-toolchain-rewriting p bottom toolchain)
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"Return a procedure that, when passed a package that's either BOTTOM or one
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of its dependents up to P so, changes it so it is built with TOOLCHAIN.
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TOOLCHAIN must be an input list."
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(define rewriting-property
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(gensym " package-toolchain-rewriting"))
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(match (package-dependents/spec p bottom)
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(() ;P does not depend on BOTTOM
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identity)
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(set
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;; SET is the list of packages "between" P and BOTTOM (included) whose
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;; toolchain needs to be changed.
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(package-mapping (lambda (p)
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(if (or (assq rewriting-property
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(package-properties p))
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(not (memq p set)))
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p
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(let ((p (package-with-c-toolchain p toolchain)))
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(package/inherit p
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(properties `((,rewriting-property . #t)
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,@(package-properties p)))))))
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(lambda (p)
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(or (assq rewriting-property (package-properties p))
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(not (memq p set))))
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#:deep? #t))))
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(define (transform-package-toolchain replacement-specs)
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"Return a procedure that, when passed a package, changes its toolchain or
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that of its dependencies according to REPLACEMENT-SPECS. REPLACEMENT-SPECS is
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a list of strings like \"fftw=gcc-toolchain@10\" meaning that the package to
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the left of the equal sign must be built with the toolchain to the right of
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the equal sign."
|
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(define split-on-commas
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(cute string-tokenize <> (char-set-complement (char-set #\,))))
|
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(define (specification->input spec)
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(let ((package (specification->package spec)))
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(list (package-name package) package)))
|
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|
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(define replacements
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(map (lambda (spec)
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(match (string-tokenize spec %not-equal)
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((spec (= split-on-commas toolchain))
|
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(cons spec (map specification->input toolchain)))
|
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(_
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(raise
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||
(formatted-message
|
||
(G_ "~a: invalid toolchain replacement specification")
|
||
spec)))))
|
||
replacement-specs))
|
||
|
||
(lambda (obj)
|
||
(if (package? obj)
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||
(or (any (match-lambda
|
||
((bottom . toolchain)
|
||
((package-toolchain-rewriting obj bottom toolchain) obj)))
|
||
replacements)
|
||
obj)
|
||
obj)))
|
||
|
||
(define (transform-package-with-debug-info specs)
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||
"Return a procedure that, when passed a package, set its 'replacement' field
|
||
to the same package but with #:strip-binaries? #f in its 'arguments' field."
|
||
(define (non-stripped p)
|
||
(package
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||
(inherit p)
|
||
(arguments
|
||
(substitute-keyword-arguments (package-arguments p)
|
||
((#:strip-binaries? _ #f) #f)))))
|
||
|
||
(define (package-with-debug-info p)
|
||
(if (member "debug" (package-outputs p))
|
||
p
|
||
(let loop ((p p))
|
||
(match (package-replacement p)
|
||
(#f
|
||
(package
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||
(inherit p)
|
||
(replacement (non-stripped p))))
|
||
(next
|
||
(package
|
||
(inherit p)
|
||
(replacement (loop next))))))))
|
||
|
||
(define rewrite
|
||
(package-input-rewriting/spec (map (lambda (spec)
|
||
(cons spec package-with-debug-info))
|
||
specs)))
|
||
|
||
(lambda (obj)
|
||
(if (package? obj)
|
||
(rewrite obj)
|
||
obj)))
|
||
|
||
(define (transform-package-tests specs)
|
||
"Return a procedure that, when passed a package, sets #:tests? #f in its
|
||
'arguments' field."
|
||
(define (package-without-tests p)
|
||
(package/inherit p
|
||
(arguments
|
||
(substitute-keyword-arguments (package-arguments p)
|
||
((#:tests? _ #f) #f)))))
|
||
|
||
(define rewrite
|
||
(package-input-rewriting/spec (map (lambda (spec)
|
||
(cons spec package-without-tests))
|
||
specs)))
|
||
|
||
(lambda (obj)
|
||
(if (package? obj)
|
||
(rewrite obj)
|
||
obj)))
|
||
|
||
(define (patched-source name source patches)
|
||
"Return a file-like object with the given NAME that applies PATCHES to
|
||
SOURCE. SOURCE must itself be a file-like object of any type, including
|
||
<git-checkout>, <local-file>, etc."
|
||
(define patch
|
||
(module-ref (resolve-interface '(gnu packages base)) 'patch))
|
||
|
||
(computed-file name
|
||
(with-imported-modules '((guix build utils))
|
||
#~(begin
|
||
(use-modules (guix build utils))
|
||
|
||
(setenv "PATH" #+(file-append patch "/bin"))
|
||
|
||
;; XXX: Assume SOURCE is a directory. This is true in
|
||
;; most practical cases, where it's a <git-checkout>.
|
||
(copy-recursively #+source #$output)
|
||
(chdir #$output)
|
||
(for-each (lambda (patch)
|
||
(invoke "patch" "-p1" "--batch"
|
||
"-i" patch))
|
||
'(#+@patches))))))
|
||
|
||
(define (transform-package-patches specs)
|
||
"Return a procedure that, when passed a package, returns a package with
|
||
additional patches."
|
||
(define (package-with-extra-patches p patches)
|
||
(let ((patches (map (lambda (file)
|
||
(local-file file))
|
||
patches)))
|
||
(if (origin? (package-source p))
|
||
(package/inherit p
|
||
(source (origin
|
||
(inherit (package-source p))
|
||
(patches (append patches
|
||
(origin-patches (package-source p)))))))
|
||
(package/inherit p
|
||
(source (patched-source (string-append (package-full-name p "-")
|
||
"-source")
|
||
(package-source p) patches))))))
|
||
|
||
(define (coalesce-alist alist)
|
||
;; Coalesce multiple occurrences of the same key in ALIST.
|
||
(let loop ((alist alist)
|
||
(keys '())
|
||
(mapping vlist-null))
|
||
(match alist
|
||
(()
|
||
(map (lambda (key)
|
||
(cons key (vhash-fold* cons '() key mapping)))
|
||
(delete-duplicates (reverse keys))))
|
||
(((key . value) . rest)
|
||
(loop rest
|
||
(cons key keys)
|
||
(vhash-cons key value mapping))))))
|
||
|
||
(define patches
|
||
;; Spec/patch alist.
|
||
(coalesce-alist
|
||
(map (lambda (spec)
|
||
(match (string-tokenize spec %not-equal)
|
||
((spec patch)
|
||
(cons spec (canonicalize-path patch)))
|
||
(_
|
||
(raise (formatted-message
|
||
(G_ "~a: invalid package patch specification")
|
||
spec)))))
|
||
specs)))
|
||
|
||
(define rewrite
|
||
(package-input-rewriting/spec
|
||
(map (match-lambda
|
||
((spec . patches)
|
||
(cons spec (cut package-with-extra-patches <> patches))))
|
||
patches)))
|
||
|
||
(lambda (obj)
|
||
(if (package? obj)
|
||
(rewrite obj)
|
||
obj)))
|
||
|
||
(define (transform-package-latest specs)
|
||
"Return a procedure that rewrites package graphs such that those in SPECS
|
||
are replaced by their latest upstream version."
|
||
(define (package-with-latest-upstream p)
|
||
(let ((source (package-latest-release p)))
|
||
(cond ((not source)
|
||
(warning
|
||
(G_ "could not determine latest upstream release of '~a'~%")
|
||
(package-name p))
|
||
p)
|
||
((string=? (upstream-source-version source)
|
||
(package-version p))
|
||
p)
|
||
(else
|
||
(unless (pair? (upstream-source-signature-urls source))
|
||
(warning (G_ "cannot authenticate source of '~a', version ~a~%")
|
||
(package-name p)
|
||
(upstream-source-version source)))
|
||
|
||
;; TODO: Take 'upstream-source-input-changes' into account.
|
||
(package
|
||
(inherit p)
|
||
(version (upstream-source-version source))
|
||
(source source))))))
|
||
|
||
(define rewrite
|
||
(package-input-rewriting/spec
|
||
(map (lambda (spec)
|
||
(cons spec package-with-latest-upstream))
|
||
specs)))
|
||
|
||
(lambda (obj)
|
||
(if (package? obj)
|
||
(rewrite obj)
|
||
obj)))
|
||
|
||
(define %transformations
|
||
;; Transformations that can be applied to things to build. The car is the
|
||
;; key used in the option alist, and the cdr is the transformation
|
||
;; procedure; it is called with two arguments: the store, and a list of
|
||
;; things to build.
|
||
`((with-source . ,transform-package-source)
|
||
(with-input . ,transform-package-inputs)
|
||
(with-graft . ,transform-package-inputs/graft)
|
||
(with-branch . ,transform-package-source-branch)
|
||
(with-commit . ,transform-package-source-commit)
|
||
(with-git-url . ,transform-package-source-git-url)
|
||
(with-c-toolchain . ,transform-package-toolchain)
|
||
(with-debug-info . ,transform-package-with-debug-info)
|
||
(without-tests . ,transform-package-tests)
|
||
(with-patch . ,transform-package-patches)
|
||
(with-latest . ,transform-package-latest)))
|
||
|
||
(define (transformation-procedure key)
|
||
"Return the transformation procedure associated with KEY, a symbol such as
|
||
'with-source', or #f if there is none."
|
||
(any (match-lambda
|
||
((k . proc)
|
||
(and (eq? k key) proc)))
|
||
%transformations))
|
||
|
||
|
||
;;;
|
||
;;; Command-line handling.
|
||
;;;
|
||
|
||
(define %transformation-options
|
||
;; The command-line interface to the above transformations.
|
||
(let ((parser (lambda (symbol)
|
||
(lambda (opt name arg result . rest)
|
||
(apply values
|
||
(alist-cons symbol arg result)
|
||
rest)))))
|
||
(list (option '("with-source") #t #f
|
||
(parser 'with-source))
|
||
(option '("with-input") #t #f
|
||
(parser 'with-input))
|
||
(option '("with-graft") #t #f
|
||
(parser 'with-graft))
|
||
(option '("with-branch") #t #f
|
||
(parser 'with-branch))
|
||
(option '("with-commit") #t #f
|
||
(parser 'with-commit))
|
||
(option '("with-git-url") #t #f
|
||
(parser 'with-git-url))
|
||
(option '("with-c-toolchain") #t #f
|
||
(parser 'with-c-toolchain))
|
||
(option '("with-debug-info") #t #f
|
||
(parser 'with-debug-info))
|
||
(option '("without-tests") #t #f
|
||
(parser 'without-tests))
|
||
(option '("with-patch") #t #f
|
||
(parser 'with-patch))
|
||
(option '("with-latest") #t #f
|
||
(parser 'with-latest))
|
||
|
||
(option '("help-transform") #f #f
|
||
(lambda _
|
||
(format #t
|
||
(G_ "Available package transformation options:~%"))
|
||
(show-transformation-options-help/detailed)
|
||
(newline)
|
||
(exit 0))))))
|
||
|
||
(define (show-transformation-options-help/detailed)
|
||
(display (G_ "
|
||
--with-source=[PACKAGE=]SOURCE
|
||
use SOURCE when building the corresponding package"))
|
||
(display (G_ "
|
||
--with-input=PACKAGE=REPLACEMENT
|
||
replace dependency PACKAGE by REPLACEMENT"))
|
||
(display (G_ "
|
||
--with-graft=PACKAGE=REPLACEMENT
|
||
graft REPLACEMENT on packages that refer to PACKAGE"))
|
||
(display (G_ "
|
||
--with-branch=PACKAGE=BRANCH
|
||
build PACKAGE from the latest commit of BRANCH"))
|
||
(display (G_ "
|
||
--with-commit=PACKAGE=COMMIT
|
||
build PACKAGE from COMMIT"))
|
||
(display (G_ "
|
||
--with-git-url=PACKAGE=URL
|
||
build PACKAGE from the repository at URL"))
|
||
(display (G_ "
|
||
--with-patch=PACKAGE=FILE
|
||
add FILE to the list of patches of PACKAGE"))
|
||
(display (G_ "
|
||
--with-latest=PACKAGE
|
||
use the latest upstream release of PACKAGE"))
|
||
(display (G_ "
|
||
--with-c-toolchain=PACKAGE=TOOLCHAIN
|
||
build PACKAGE and its dependents with TOOLCHAIN"))
|
||
(display (G_ "
|
||
--with-debug-info=PACKAGE
|
||
build PACKAGE and preserve its debug info"))
|
||
(display (G_ "
|
||
--without-tests=PACKAGE
|
||
build PACKAGE without running its tests")))
|
||
|
||
(define (show-transformation-options-help)
|
||
"Show basic help for package transformation options."
|
||
(display (G_ "
|
||
--help-transform list package transformation options not shown here")))
|
||
|
||
(define (options->transformation opts)
|
||
"Return a procedure that, when passed an object to build (package,
|
||
derivation, etc.), applies the transformations specified by OPTS and returns
|
||
the resulting objects. OPTS must be a list of symbol/string pairs such as:
|
||
|
||
((with-branch . \"guile-gcrypt=master\")
|
||
(without-tests . \"libgcrypt\"))
|
||
|
||
Each symbol names a transformation and the corresponding string is an argument
|
||
to that transformation."
|
||
(define applicable
|
||
;; List of applicable transformations as symbol/procedure pairs in the
|
||
;; order in which they appear on the command line.
|
||
(filter-map (match-lambda
|
||
((key . value)
|
||
(match (transformation-procedure key)
|
||
(#f
|
||
#f)
|
||
(transform
|
||
;; XXX: We used to pass TRANSFORM a list of several
|
||
;; arguments, but we now pass only one, assuming that
|
||
;; transform composes well.
|
||
(list key value (transform (list value)))))))
|
||
(reverse opts)))
|
||
|
||
(define (package-with-transformation-properties p)
|
||
(package/inherit p
|
||
(properties `((transformations
|
||
. ,(map (match-lambda
|
||
((key value _)
|
||
(cons key value)))
|
||
applicable))
|
||
,@(package-properties p)))))
|
||
|
||
(lambda (obj)
|
||
(define (tagged-object new)
|
||
(if (and (not (eq? obj new))
|
||
(package? new) (not (null? applicable)))
|
||
(package-with-transformation-properties new)
|
||
new))
|
||
|
||
(tagged-object
|
||
(fold (match-lambda*
|
||
(((name value transform) obj)
|
||
(let ((new (transform obj)))
|
||
(when (eq? new obj)
|
||
(warning (G_ "transformation '~a' had no effect on ~a~%")
|
||
name
|
||
(if (package? obj)
|
||
(package-full-name obj)
|
||
obj)))
|
||
new)))
|
||
obj
|
||
applicable))))
|
||
|
||
(define (package-transformations package)
|
||
"Return the transformations applied to PACKAGE according to its properties."
|
||
(match (assq-ref (package-properties package) 'transformations)
|
||
(#f '())
|
||
(transformations transformations)))
|
||
|
||
(define (manifest-entry-with-transformations entry)
|
||
"Return ENTRY with an additional 'transformations' property if it's not
|
||
already there."
|
||
(let ((properties (manifest-entry-properties entry)))
|
||
(if (assq 'transformations properties)
|
||
entry
|
||
(let ((item (manifest-entry-item entry)))
|
||
(manifest-entry
|
||
(inherit entry)
|
||
(properties
|
||
(match (and (package? item)
|
||
(package-transformations item))
|
||
((or #f '())
|
||
properties)
|
||
(transformations
|
||
`((transformations . ,transformations)
|
||
,@properties)))))))))
|