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49 lines
1.3 KiB
Nix
49 lines
1.3 KiB
Nix
/* Some functions for manipulating meta attributes, as well as the
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name attribute. */
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rec {
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/* Add to or override the meta attributes of the given
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derivation.
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Example:
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addMetaAttrs {description = "Bla blah";} somePkg
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*/
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addMetaAttrs = newAttrs: drv:
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drv // { meta = (if drv ? meta then drv.meta else {}) // newAttrs; };
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/* Change the symbolic name of a package for presentation purposes
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(i.e., so that nix-env users can tell them apart).
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*/
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setName = name: drv: drv // {inherit name;};
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/* Like `setName', but takes the previous name as an argument.
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Example:
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updateName (oldName: oldName + "-experimental") somePkg
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*/
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updateName = updater: drv: drv // {name = updater (drv.name);};
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/* Append a suffix to the name of a package. !!! the suffix should
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really be appended *before* the version, at least most of the
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time.
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*/
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appendToName = suffix: updateName (name: "${name}-${suffix}");
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/* Decrease the nix-env priority of the package, i.e., other
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versions/variants of the package will be preferred.
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*/
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lowPrio = drv: addMetaAttrs { priority = "10"; } drv;
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/* Increase the nix-env priority of the package, i.e., this
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version/variant of the package will be preferred.
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*/
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hiPrio = drv: addMetaAttrs { priority = "-10"; } drv;
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}
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