7568587e88
fetch definitions of oldest options and to add them inside the new option.
Properties are still valid and will not be affected by the renaming. e.g:
with: rename alias "foo.bar" to "baz.quz"
and with the following module:
{
foo.bar = (mkOverride 10 {}) 42;
baz.quz = 21;
}
the result of baz.quz would be 42 because the priority is still working
after the renaming.
svn path=/nixos/trunk/; revision=17484
42 lines
1.1 KiB
Nix
42 lines
1.1 KiB
Nix
{pkgs, options, config, ...}:
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let
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to = throw "This is just a dummy keyword";
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alias = { name = "Alias"; };
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obsolete = { name = "Obsolete name"; };
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zipModules = list: with pkgs.lib;
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zip (n: v:
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if tail v != [] then zipModules v else head v
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) list;
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rename = fromStatus: from: keyword: to: with pkgs.lib;
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let
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setTo = setAttrByPath (splitString "." to);
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setFrom = setAttrByPath (splitString "." from);
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toOf = attrByPath (splitString "." to) (abort "bad renaming");
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fromOf = attrByPath (splitString "." from) (abort "IE: renaming error");
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in
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[{
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options = setFrom (mkOption {
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description = "${fromStatus.name} of <option>${to}</option>.";
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apply = x: toOf config;
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});
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}] ++
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[{
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options = setTo (mkOption {
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extraConfigs = map (def: def.value) (fromOf options).definitions;
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});
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}];
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in zipModules ([]
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# usage example:
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# ++ rename alias "services.xserver.slim.theme" to "services.xserver.displayManager.slim.theme"
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# ++ rename obsolete "environment.extraPackages" to "environment.systemPackages"
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) # do not add renaming after this.
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