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authorLudovic Courtès <ludo@gnu.org>2020-03-06 11:25:43 +0100
committerLudovic Courtès <ludo@gnu.org>2020-03-12 18:32:15 +0100
commitcf2ac04f13d9266c7c8a2ebd2e85ef593231ac9d (patch)
tree409921980504c7138e4dac8769823fb50becc516 /tests
parentbe78906592c761aa2a67e979074561e459efdcac (diff)
downloadguix-cf2ac04f13d9266c7c8a2ebd2e85ef593231ac9d.tar
guix-cf2ac04f13d9266c7c8a2ebd2e85ef593231ac9d.tar.gz
gexp: Add 'with-parameters'.
* guix/gexp.scm (<parameterized>): New record type. (with-parameters): New macro. (compile-parameterized): New gexp compiler. * tests/gexp.scm ("with-parameters for %current-system") ("with-parameters for %current-target-system") ("with-parameters + file-append"): New tests. * doc/guix.texi (G-Expressions): Document it.
Diffstat (limited to 'tests')
-rw-r--r--tests/gexp.scm38
1 files changed, 38 insertions, 0 deletions
diff --git a/tests/gexp.scm b/tests/gexp.scm
index 9e38816c3d..6a42d3eb57 100644
--- a/tests/gexp.scm
+++ b/tests/gexp.scm
@@ -284,6 +284,44 @@
(((thing "out"))
(eq? thing file))))))
+(test-assertm "with-parameters for %current-system"
+ (mlet* %store-monad ((system -> (match (%current-system)
+ ("aarch64-linux" "x86_64-linux")
+ (_ "aarch64-linux")))
+ (drv (package->derivation coreutils system))
+ (obj -> (with-parameters ((%current-system system))
+ coreutils))
+ (result (lower-object obj)))
+ (return (string=? (derivation-file-name drv)
+ (derivation-file-name result)))))
+
+(test-assertm "with-parameters for %current-target-system"
+ (mlet* %store-monad ((target -> "riscv64-linux-gnu")
+ (drv (package->cross-derivation coreutils target))
+ (obj -> (with-parameters
+ ((%current-target-system target))
+ coreutils))
+ (result (lower-object obj)))
+ (return (string=? (derivation-file-name drv)
+ (derivation-file-name result)))))
+
+(test-assert "with-parameters + file-append"
+ (let* ((system (match (%current-system)
+ ("aarch64-linux" "x86_64-linux")
+ (_ "aarch64-linux")))
+ (drv (package-derivation %store coreutils system))
+ (param (make-parameter 7))
+ (exp #~(here we go #$(with-parameters ((%current-system system)
+ (param 42))
+ (if (= (param) 42)
+ (file-append coreutils "/bin/touch")
+ %bootstrap-guile)))))
+ (match (gexp->sexp* exp)
+ (('here 'we 'go (? string? result))
+ (string=? result
+ (string-append (derivation->output-path drv)
+ "/bin/touch"))))))
+
(test-assert "ungexp + ungexp-native"
(let* ((exp (gexp (list (ungexp-native %bootstrap-guile)
(ungexp coreutils)