diff options
author | oxalica <oxalicc@pm.me> | 2021-02-26 00:21:13 +0800 |
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committer | oxalica <oxalicc@pm.me> | 2021-04-02 19:20:23 +0800 |
commit | 354d262db829ecedb3fb43d1bdb454b20d9941f7 (patch) | |
tree | 86deabdf6369837aafc1b28170fb2a7047edfe1b /lib | |
parent | 905ecb920edc73922beea028adf3b139f96f3bd6 (diff) |
lib.meta: introduce `availableOn`
Diffstat (limited to 'lib')
-rw-r--r-- | lib/meta.nix | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/lib/meta.nix b/lib/meta.nix index 2e83c4247ddfb..bc04394dcf0b5 100644 --- a/lib/meta.nix +++ b/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 []); } |