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home/modules/shellAliases: add support for restricting shells

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Oystein Kristoffer Tveit
2025-05-21 00:25:47 +02:00
parent abac62b42b
commit 3dcab3e966
1 changed files with 54 additions and 42 deletions
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96
home/modules/shellAliases.nix
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@@ -25,7 +25,7 @@
};
};
isAlias = v: builtins.isAttrs v && v ? "alias" && v ? "type";
isAlias = v: builtins.isAttrs v && v ? alias;
};
in {
lib = formatLib;
@@ -47,6 +47,29 @@
"grep nix"
];
};
shells = lib.mkOption {
description = "List of shells for which the alias is valid.";
type = with lib.types; listOf (enum [
"bash"
"zsh"
"fish"
"nushell"
]);
default = [
"bash"
"zsh"
"fish"
"nushell"
];
example = [
"bash"
"zsh"
];
};
# TODO:
# subshell = lib.mkEnableOption "" // {
# description = "Whether to run the aliased command in a subshell";
# };
};
};
@@ -59,45 +82,34 @@
check = v: builtins.isString v || formatLib.isAlias v;
};
aliasTreeType = with lib.types; attrsOf (either coercedAliasType aliasTreeType);
aliasTreeType = with lib.types; attrsOf (either coercedAliasType aliasTreeType) // {
description = "Alias tree";
};
in aliasTreeType;
# Alias Tree -> { :: Alias }
generateAttrs = let
inherit (lib) mapAttrs attrValues filterAttrs isAttrs
isString concatStringsSep foldr;
applyFunctor = attrset: formatLib.functors.${attrset.type}.apply attrset;
# TODO: better naming
allAttrValuesAreStrings = attrset: let
# [ {String} ]
filteredAliases = [(filterAttrs (_: isString) attrset)];
# [ {String} ]
remainingFunctors = let
functorSet = filterAttrs (_: formatLib.isAlias) attrset;
appliedFunctorSet = mapAttrs (_: applyFunctor) functorSet;
in [ appliedFunctorSet ];
# [ {AttrSet} ]
remainingAliasSets = attrValues (filterAttrs (_: v: isAttrs v && !formatLib.isAlias v) attrset);
# [ {String} ]
recursedAliasSets = filteredAliases
++ (remainingFunctors)
++ (map allAttrValuesAreStrings remainingAliasSets);
in foldr (a: b: a // b) {} recursedAliasSets;
in
allAttrValuesAreStrings;
# TODO:
# generateAttrs = pipe [
# collect leave nodes
# map apply functor
# ]
# Alias Tree -> String -> { :: Alias }
generateAttrs = shell: let
generateAttrs' = attrset: lib.pipe attrset [
(attrset: {
right = lib.filterAttrs (_: v: formatLib.isAlias v) attrset;
wrong = lib.filterAttrs (_: v: !(formatLib.isAlias v)) attrset;
})
({ right, wrong }:
# Leaf nodes
(lib.pipe right [
(lib.filterAttrs (_: v: lib.elem shell v.shells))
(builtins.mapAttrs (_: v: formatLib.functors.${v.type}.apply v))
])
//
# Subsets
(lib.pipe wrong [
builtins.attrValues
(map generateAttrs')
(lib.foldr (a: b: a // b) { })
])
)
];
in generateAttrs';
# Alias Tree -> String
generateText = aliases: let
@@ -243,20 +255,20 @@ in {
programs = {
zsh = {
shellAliases = shellAliasesFormat.generateAttrs cfg.aliases;
shellAliases = shellAliasesFormat.generateAttrs "zsh" cfg.aliases;
sessionVariables = cfg.variables;
};
bash = {
shellAliases = shellAliasesFormat.generateAttrs cfg.aliases;
shellAliases = shellAliasesFormat.generateAttrs "bash" cfg.aliases;
sessionVariables = cfg.variables;
};
fish = {
shellAliases = shellAliasesFormat.generateAttrs cfg.aliases;
shellAliases = shellAliasesFormat.generateAttrs "fish" cfg.aliases;
# TODO: fish does not support session variables?
# localVariables = cfg.variables;
};
nushell = {
shellAliases = shellAliasesFormat.generateAttrs cfg.aliases;
shellAliases = shellAliasesFormat.generateAttrs "nushell" cfg.aliases;
environmentVariables = cfg.variables;
};
};