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feat: aliases and custom snowfall root

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Jake Hamilton 2023-01-09 05:22:28 -08:00
parent d8a08681a9
commit cbe1b6e0fb
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9 changed files with 126 additions and 85 deletions
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27
lib/shell/default.nix
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@ -4,20 +4,22 @@
}:
let
inherit (core-inputs.nixpkgs.lib) assertMsg foldl;
inherit (core-inputs.flake-utils-plus.lib) filterPackages;
inherit (core-inputs.nixpkgs.lib) assertMsg foldl mapAttrs;
user-shells-root = snowfall-lib.fs.get-file "shells";
user-shells-root = snowfall-lib.fs.get-snowfall-file "shells";
in
{
shell = {
# Create flake output packages.
# Type: Attrs -> Attrs
# Usage: create-shells { inherit channels; src = ./my-shells; overrides = { inherit another-shell; default = "my-shell"; }; }
# Usage: create-shells { inherit channels; src = ./my-shells; overrides = { inherit another-shell; }; alias = { default = "another-shell"; }; }
# result: { another-shell = ...; my-shell = ...; default = ...; }
create-shells =
{ channels
, src ? user-shells-root
, overrides ? { }
, alias ? { }
}:
let
user-shells = snowfall-lib.fs.get-default-nix-files-recursive src;
@ -35,19 +37,12 @@ in
shells // {
${metadata.name} = metadata.drv;
};
shells-without-default = foldl merge-shells { } shells-metadata;
default-shell =
if overrides.default or null == null then
{ }
else if builtins.isAttrs overrides.default then
{ default = overrides.default; }
else if shells-without-default.${overrides.default} or null != null then
{ default = shells-without-default.${overrides.default}; }
else
{ };
overrides-without-default = builtins.removeAttrs overrides [ "default" ];
shells = shells-without-default // default-shell // overrides-without-default;
shells-without-aliases = foldl merge-shells { } shells-metadata;
aliased-shells = mapAttrs (name: value: shells-without-aliases.${value}) alias;
shells = shells-without-aliases // aliased-shells // overrides;
in
shells;
filterPackages
channels.nixpkgs.system
shells;
};
}