pyrox.dev
lib.lists.mutuallyExclusive: add function
authored by Vladimír Čunát and committed by John Ericson dfc004e6 5afcdc88
+8
lib/lists.nix
+8
lib/lists.nix
···
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*/
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subtractLists = e: filter (x: !(elem x e));
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+
/* Test if two lists have no common element.
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It should be slightly more efficient than (intersectLists a b == [])
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*/
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mutuallyExclusive = a: b:
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(builtins.length a) == 0 ||
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(!(builtins.elem (builtins.head a) b) &&
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mutuallyExclusive (builtins.tail a) b);
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+
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}
+1
-6
pkgs/stdenv/generic/default.nix
+1
-6
pkgs/stdenv/generic/default.nix
···
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throw ''‘${showLicense license}’ is not an attribute of lib.licenses''
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) list;
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-
mutuallyExclusive = a: b:
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-
(builtins.length a) == 0 ||
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-
(!(builtins.elem (builtins.head a) b) &&
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-
mutuallyExclusive (builtins.tail a) b);
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-
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areLicenseListsValid =
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-
if mutuallyExclusive whitelist blacklist then
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assert onlyLicenses whitelist; assert onlyLicenses blacklist; true
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else
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throw "whitelistedLicenses and blacklistedLicenses are not mutually exclusive.";
···
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throw ''‘${showLicense license}’ is not an attribute of lib.licenses''
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) list;
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areLicenseListsValid =
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if lib.mutuallyExclusive whitelist blacklist then
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assert onlyLicenses whitelist; assert onlyLicenses blacklist; true
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else
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throw "whitelistedLicenses and blacklistedLicenses are not mutually exclusive.";