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| author | Ludovic Courtès <ludo@gnu.org> | 2016-02-12 18:59:11 +0100 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2016-02-12 21:54:25 +0100 |
| commit | 98a7b528d61cfca3f8bfc827cf94f4716ab75abd (patch) | |
| tree | 0f6b1d8c8eaf02d2ad6eca3d8ba673e57fc648be | |
| parent | 0d0bcaa08e8473693dab01ebf417b9e9fcefa087 (diff) | |
| download | gnu-guix-98a7b528d61cfca3f8bfc827cf94f4716ab75abd.tar gnu-guix-98a7b528d61cfca3f8bfc827cf94f4716ab75abd.tar.gz | |
store: Add monadic access to '%current-system'.
* guix/store.scm (current-system, set-current-system): New procedures.
* tests/store.scm ("current-system"): New test.
| -rw-r--r-- | guix/store.scm | 16 | ||||
| -rw-r--r-- | tests/store.scm | 11 |
2 files changed, 25 insertions, 2 deletions
diff --git a/guix/store.scm b/guix/store.scm index 3c4d1c0058..8123407816 100644 --- a/guix/store.scm +++ b/guix/store.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -118,6 +118,8 @@ store-lower run-with-store %guile-for-build + current-system + set-current-system text-file interned-file @@ -1040,6 +1042,18 @@ permission bits are kept." (define set-build-options* (store-lift set-build-options)) +(define-inlinable (current-system) + ;; Consult the %CURRENT-SYSTEM fluid at bind time. This is equivalent to + ;; (lift0 %current-system %store-monad), but inlinable, thus avoiding + ;; closure allocation in some cases. + (lambda (state) + (values (%current-system) state))) + +(define-inlinable (set-current-system system) + ;; Set the %CURRENT-SYSTEM fluid at bind time. + (lambda (state) + (values (%current-system system) state))) + (define %guile-for-build ;; The derivation of the Guile to be used within the build environment, ;; when using 'gexp->derivation' and co. diff --git a/tests/store.scm b/tests/store.scm index 394c06bc0f..9d651ce5a9 100644 --- a/tests/store.scm +++ b/tests/store.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -837,6 +837,15 @@ (file (add %store "foo" "Lowered."))) (call-with-input-file file get-string-all))) +(test-equal "current-system" + "bar" + (parameterize ((%current-system "frob")) + (run-with-store %store + (mbegin %store-monad + (set-current-system "bar") + (current-system)) + #:system "foo"))) + (test-assert "query-path-info" (let* ((ref (add-text-to-store %store "ref" "foo")) (item (add-text-to-store %store "item" "bar" (list ref))) |