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dependencies: ensure __depPackages.foo.* options are set only once

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Gaetan Lepage 2025-09-16 16:42:39 +02:00 • committed by Gaétan Lepage
parent 796d662401
commit e1e056e82e
1 changed files with 9 additions and 1 deletions
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10
modules/dependencies.nix
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@ -28,7 +28,15 @@ let
};
};
attrPathType = with types; coercedTo str lib.toList (listOf str);
# Motivation:
# If one were to define `__depPackages.foo.default = "gzip";` in two places (by accident),
# the module system would merge the two definitions as `["gzip" "gzip"]`.
#
# Solution:
# -> Make attrPathType unique so the option can only be set once.
attrPathType =
with types;
unique { message = "attrPathType must be unique"; } (coercedTo str lib.toList (listOf str));
literalExpressionType = lib.types.mkOptionType {
name = "literal-expression";