d567baabbd
logic through the `parseDrvName' and `compareVersions' primops. This will allow expressions to easily check whether some dependency is a specific needed version or falls in some version range. See tests/lang/eval-okay-versions.nix for examples.
40 lines
1.2 KiB
Nix
40 lines
1.2 KiB
Nix
let
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name1 = "hello-1.0.2";
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name2 = "hello";
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name3 = "915resolution-0.5.2";
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name4 = "xf86-video-i810-1.7.4";
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eq = 0;
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lt = builtins.sub 0 1;
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gt = 1;
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versionTest = v1: v2: expected:
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let d1 = builtins.compareVersions v1 v2;
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d2 = builtins.compareVersions v2 v1;
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in d1 == builtins.sub 0 d2 && d1 == expected;
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tests = [
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((builtins.parseDrvName name1).name == "hello")
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((builtins.parseDrvName name1).version == "1.0.2")
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((builtins.parseDrvName name2).name == "hello")
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((builtins.parseDrvName name2).version == "")
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((builtins.parseDrvName name3).name == "915resolution")
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((builtins.parseDrvName name3).version == "0.5.2")
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((builtins.parseDrvName name4).name == "xf86-video-i810")
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((builtins.parseDrvName name4).version == "1.7.4")
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(versionTest "1.0" "2.3" lt)
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(versionTest "2.1" "2.3" lt)
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(versionTest "2.3" "2.3" eq)
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(versionTest "2.5" "2.3" gt)
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(versionTest "3.1" "2.3" gt)
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(versionTest "2.3.1" "2.3" gt)
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(versionTest "2.3.1" "2.3a" gt)
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(versionTest "2.3pre1" "2.3" lt)
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(versionTest "2.3pre3" "2.3pre12" lt)
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(versionTest "2.3a" "2.3c" lt)
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(versionTest "2.3pre1" "2.3c" lt)
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(versionTest "2.3pre1" "2.3q" lt)
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];
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in (import ./lib.nix).and tests
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