mirror of
https://github.com/nix-community/home-manager
synced 2024-11-01 08:49:44 +01:00
66 lines
2.3 KiB
Nix
66 lines
2.3 KiB
Nix
|
{ lib }: rec {
|
||
|
|
mkNushellInline = expr: lib.setType "nushell-inline" { inherit expr; };
|
||
|
|
|
||
|
|
toNushell = { indent ? "", multiline ? true, asBindings ? false }@args:
|
||
|
|
v:
|
||
|
|
let
|
||
|
|
innerIndent = "${indent} ";
|
||
|
|
introSpace = if multiline then ''
|
||
|
|
|
||
|
|
${innerIndent}'' else
|
||
|
|
" ";
|
||
|
|
outroSpace = if multiline then ''
|
||
|
|
|
||
|
|
${indent}'' else
|
||
|
|
" ";
|
||
|
|
innerArgs = args // {
|
||
|
|
indent = if asBindings then indent else innerIndent;
|
||
|
|
asBindings = false;
|
||
|
|
};
|
||
|
|
concatItems = lib.concatStringsSep introSpace;
|
||
|
|
isNushellInline = lib.isType "nushell-inline";
|
||
|
|
|
||
|
|
generatedBindings = assert lib.assertMsg (badVarNames == [ ])
|
||
|
|
"Bad Nushell variable names: ${
|
||
|
|
lib.generators.toPretty { } badVarNames
|
||
|
|
}";
|
||
|
|
lib.concatStrings (lib.mapAttrsToList (key: value: ''
|
||
|
|
${indent}let ${key} = ${toNushell innerArgs value}
|
||
|
|
'') v);
|
||
|
|
|
||
|
|
isBadVarName = name:
|
||
|
|
# Extracted from https://github.com/nushell/nushell/blob/ebc7b80c23f777f70c5053cca428226b3fe00d30/crates/nu-parser/src/parser.rs#L33
|
||
|
|
# Variables with numeric or even empty names are allowed. The only requisite is not containing any of the following characters
|
||
|
|
let invalidVariableCharacters = ".[({+-*^/=!<>&|";
|
||
|
|
in lib.match "^[$]?[^${lib.escapeRegex invalidVariableCharacters}]+$"
|
||
|
|
name == null;
|
||
|
|
badVarNames = lib.filter isBadVarName (builtins.attrNames v);
|
||
|
|
in if asBindings then
|
||
|
|
generatedBindings
|
||
|
|
else if v == null then
|
||
|
|
"null"
|
||
|
|
else if lib.isInt v || lib.isFloat v || lib.isString v || lib.isBool v then
|
||
|
|
lib.strings.toJSON v
|
||
|
|
else if lib.isList v then
|
||
|
|
(if v == [ ] then
|
||
|
|
"[]"
|
||
|
|
else
|
||
|
|
"[${introSpace}${
|
||
|
|
concatItems (map (value: "${toNushell innerArgs value}") v)
|
||
|
|
}${outroSpace}]")
|
||
|
|
else if lib.isAttrs v then
|
||
|
|
(if isNushellInline v then
|
||
|
|
"(${v.expr})"
|
||
|
|
else if v == { } then
|
||
|
|
"{}"
|
||
|
|
else if lib.isDerivation v then
|
||
|
|
toString v
|
||
|
|
else
|
||
|
|
"{${introSpace}${
|
||
|
|
concatItems (lib.mapAttrsToList (key: value:
|
||
|
|
"${lib.strings.toJSON key}: ${toNushell innerArgs value}") v)
|
||
|
|
}${outroSpace}}")
|
||
|
|
else
|
||
|
|
abort "nushell.toNushell: type ${lib.typeOf v} is unsupported";
|
||
|
|
}
|