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| -rw-r--r-- | forge/utils.scm | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/forge/utils.scm b/forge/utils.scm new file mode 100644 index 0000000..f0740f0 --- /dev/null +++ b/forge/utils.scm @@ -0,0 +1,65 @@ +;;; guix-forge --- Guix software forge meta-service +;;; Copyright © 2022 Arun Isaac <arunisaac@systemreboot.net> +;;; +;;; This file is part of guix-forge. +;;; +;;; guix-forge 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. +;;; +;;; guix-forge 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 guix-forge. If not, see +;;; <https://www.gnu.org/licenses/>. + +(define-module (forge utils) + #:use-module (ice-9 match) + #:use-module (guix derivations) + #:use-module (guix gexp) + #:use-module (guix monads) + #:use-module (guix profiles) + #:use-module (guix search-paths) + #:use-module (guix store) + #:export (with-packages)) + +(define (profile-with-packages packages) + "Return profile with PACKAGES." + (with-store store + (run-with-store store + (mlet* %store-monad ((prof-drv (profile-derivation + (packages->manifest packages))) + (profile -> (derivation->output-path prof-drv))) + (mbegin %store-monad + (built-derivations (list prof-drv)) + (return profile)))))) + +(define (environment-with-packages packages) + "Return environment of a profile with PACKAGES. Return value is an +association list mapping the name of an environment variable to its +value." + (map (match-lambda + ((search-path . value) + (cons (search-path-specification-variable search-path) + value))) + (profile-search-paths (profile-with-packages packages)))) + +(define (with-packages packages exp) + "Return a gexp executing EXP, another gexp, in an environment where +PACKAGES are available and their search path environment variables +have been set." + #~(begin + (use-modules (ice-9 match)) + ;; Add a reference to the profile. + #$(profile-with-packages packages) + ;; Set the environment. + (for-each (match-lambda + ((variable . value) + (setenv variable value))) + '#$(environment-with-packages packages)) + ;; Run the provided expression. + #$exp)) |