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authorAlyssa Ross <hi@alyssa.is>2021-06-22 15:01:47 +0000
committerAlyssa Ross <hi@alyssa.is>2021-06-22 16:57:59 +0000
commit633cab0ecb07627706c6b523e219490f019eaab5 (patch)
tree4fb472bdfe2723037dad53dc1b8a87c939015f5e /nixpkgs/lib/meta.nix
parentffb691c199e7e0cbc4e45e5310779c9e3f7c2a73 (diff)
parent432fc2d9a67f92e05438dff5fdc2b39d33f77997 (diff)
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Merge commit '432fc2d9a67f92e05438dff5fdc2b39d33f77997'
# Conflicts:
#	nixpkgs/pkgs/applications/editors/emacs/elisp-packages/elpa-generated.nix
#	nixpkgs/pkgs/applications/networking/mailreaders/thunderbird/default.nix
#	nixpkgs/pkgs/applications/window-managers/sway/default.nix
#	nixpkgs/pkgs/build-support/rust/default.nix
#	nixpkgs/pkgs/development/go-modules/generic/default.nix
Diffstat (limited to 'nixpkgs/lib/meta.nix')
-rw-r--r--nixpkgs/lib/meta.nix12
1 files changed, 12 insertions, 0 deletions
diff --git a/nixpkgs/lib/meta.nix b/nixpkgs/lib/meta.nix
index 2e83c4247ddf..bc04394dcf0b 100644
--- a/nixpkgs/lib/meta.nix
+++ b/nixpkgs/lib/meta.nix
@@ -87,4 +87,16 @@ rec {
         then { system = elem; }
         else { parsed = elem; };
     in lib.matchAttrs pattern platform;
+
+  /* Check if a package is available on a given platform.
+
+     A package is available on a platform if both
+
+       1. One of `meta.platforms` pattern matches the given platform.
+
+       2. None of `meta.badPlatforms` pattern matches the given platform.
+  */
+  availableOn = platform: pkg:
+    lib.any (platformMatch platform) pkg.meta.platforms &&
+    lib.all (elem: !platformMatch platform elem) (pkg.meta.badPlatforms or []);
 }