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-rw-r--r--guix/forge/utils.scm35
1 files changed, 34 insertions, 1 deletions
diff --git a/guix/forge/utils.scm b/guix/forge/utils.scm
index dd980ef..f23f763 100644
--- a/guix/forge/utils.scm
+++ b/guix/forge/utils.scm
@@ -21,11 +21,44 @@
#:use-module (ice-9 match)
#:use-module (guix derivations)
#:use-module (guix gexp)
+ #:use-module (guix modules)
#:use-module (guix monads)
#:use-module (guix profiles)
#:use-module (guix search-paths)
#:use-module (guix store)
- #:export (with-packages))
+ #:export (with-manifest
+ with-packages))
+
+(define (with-manifest manifest exp)
+ "Return a gexp executing EXP, another gexp, in a profile defined by
+MANIFEST."
+ (with-imported-modules (source-module-closure '((guix search-paths)))
+ #~(begin
+ ;; Set the environment.
+ ;; We pull out match-lambda using module-ref instead of using
+ ;; use-modules because this gexp will be substituted into other
+ ;; gexps and use-modules only works at the top-level.
+ (let-syntax ((match-lambda (macro-transformer
+ (module-ref (resolve-module '(ice-9 match))
+ 'match-lambda))))
+ (let ((evaluate-search-paths (@@ (guix search-paths) evaluate-search-paths))
+ (search-path-specification-variable (@@ (guix search-paths)
+ search-path-specification-variable))
+ (sexp->search-path-specification (@@ (guix search-paths)
+ sexp->search-path-specification)))
+ (for-each (match-lambda
+ ((specification . value)
+ (setenv (search-path-specification-variable specification)
+ value)))
+ (evaluate-search-paths
+ (map sexp->search-path-specification
+ '#$(map search-path-specification->sexp
+ (manifest-search-paths manifest)))
+ (list #$(profile
+ (content manifest)
+ (allow-collisions? #t)))))))
+ ;; Run the provided expression.
+ #$exp)))
(define (profile-with-packages packages)
"Return profile with PACKAGES."