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Oystein Kristoffer Tveit 2022-11-24 20:04:52 +01:00
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result

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MIT License
Copyright (c) 2022 h7x4
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# Nix Attr Search
**NOTE: This is still in alpha**
These are some tools i made for ease of searching for stuff while writing my nix configs.
They are made with `fzf`, so they can easily be piped into other programs.
Also, they all create a derivation containing all of the attributes.
---
## Try it out!
### Nix Packages
TODO:
### Nix Options
TODO:
### Homemanager
```
nix run github:h7x4/nix-attr-search#home-manager-search
```
Or a more advanced version:
```
nix run github:h7x4/nix-attr-search#home-manager-search -- --flake="github:nix-community/home-manager" --ref="release-22.05"
```
---
## Some piping ideas
### Misc
- Pipe the option into the clipboard
- Bind shortcut keys to open a terminal with the program, and paste the chosen option directly into the current program (probably a code editor of some sort, with your nix configs open).
### Repiping values into `jq`
- Repipe the chosen value into `jq`, and choose either the default value, the example value.
- Repipe the chosen value into `jq`, choosing its referenced configs, pipe these into `fzf` once more to choose one referenced config, then pipe this relative file path into `rg` to (hopefully) find the specific location the value was set, and then open the file at its specific position in an editor.

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{
"nodes": {
"home-manager": {
"inputs": {
"nixpkgs": [
"nixpkgs"
],
"utils": "utils"
},
"locked": {
"lastModified": 1669071065,
"narHash": "sha256-KBpgj3JkvlPsJ3duOZqFJe6tgr+wc75t8sFmgRbBSbw=",
"owner": "nix-community",
"repo": "home-manager",
"rev": "f7641a3ff398ccce952e19a199d775934e518c1d",
"type": "github"
},
"original": {
"owner": "nix-community",
"ref": "release-22.11",
"repo": "home-manager",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1669196922,
"narHash": "sha256-J1fjyUsst3mXxgz2Z1cD7boh1Q5GmfeZjNfW1WVMsr8=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "e8016a90db25c48cfe2cb8ab48bbc94a4365dab9",
"type": "github"
},
"original": {
"id": "nixpkgs",
"ref": "nixos-22.11",
"type": "indirect"
}
},
"root": {
"inputs": {
"home-manager": "home-manager",
"nixpkgs": "nixpkgs"
}
},
"utils": {
"locked": {
"lastModified": 1667395993,
"narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

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{
inputs = {
nixpkgs.url = "nixpkgs/nixos-22.11";
home-manager = {
url = "github:nix-community/home-manager/release-22.11";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs = { self, nixpkgs, home-manager }:
let
system = "x86_64-linux";
pkgs = nixpkgs.legacyPackages.${system};
in {
apps.${system} = let
toApp = _: pkg: {
type = "app";
program = toString pkg;
};
in builtins.mapAttrs toApp self.packages.${system};
hydraJobs = with pkgs.lib;
mapAttrs' (name: value: nameValuePair name { ${system} = value; })
self.packages.${system};
packages.${system} = {
home-manager-search =
pkgs.callPackage ./home-manager-search.nix { inherit home-manager; };
nix-option-search = pkgs.callPackage ./nix-option-search.nix { };
nix-package-search = pkgs.callPackage ./nix-package-search.nix { };
};
overlays.default = final: prev: prev // self.packages.${system};
devShells.${system}.default =
pkgs.mkShell { packages = with pkgs; [ nixfmt ]; };
};
}

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{ pkgs, lib, home-manager, system, ... }:
let
# TODO: Preprocess XML tags in description.
# TODO: Make non-literal examples have better syntax highlighting
# TODO: Colorize preview
usage = pkgs.writeText "home-manager-search-usage" ''
Usage:
home-manager-search [ -j | -n ] [-f=<flake-url> [-r=<git-reference>]]
Options:
-h | --help Display this message.
-j | --json Display raw data in json format.
-n | --no-preview Don't display a preview.
-f=* | --flake=* Use a flake url to an instance (e.g. a fork) of home-manager,
generate its options, and use those instead of the global ones.
-r=* | --ref=* If a flake url is specified, this option might be used to choose
a specific reference (branch, tag, commit, etc.) to use for
generating the docs.
Example usage:
home-manager-search
home-manager-search -j
home-manager-search --flake="github:nix-community/home-manager"
home-manager-search --flake="github:nix-community/home-manager" --ref="release-22.05"
'';
inherit (pkgs.callPackage ./shared.nix { })
jq fzf gomplate blinkred clear flatten;
template = pkgs.writeText "preview-home-manager-attrs-template" (flatten ''
{{ with (ds "opt")}}
{{- $title := join .loc "." }}
{{- $title }}
{{ strings.Repeat (strings.RuneCount $title) "=" }}
{{ if .readOnly }}
${blinkred}READONLY${clear}
{{ end }}
Type: {{ .type }}
{{ if has . "description" }}
DESCRIPTION
{{ strings.Repeat 20 "=" }}
{{ .description }}
{{ end }}
{{- if has . "example" }}
EXAMPLE
{{ strings.Repeat 20 "=" }}
{{ if and (has .example "_type") }}
{{ else }}
{{ data.ToJSONPretty " " .example }}
{{ end }}
{{ end }}
{{- if has . "default" }}
DEFAULT
{{ strings.Repeat 20 "=" }}
{{ .default }}
{{ end }}
CONFIGURED IN:
{{ strings.Repeat 20 "=" }}
{{ range .declarations }}
{{- .path }}
{{ end }}
{{ else }}
ERROR: Could not find datasource
{{ end }}
'');
previewJson = pkgs.writers.writeBash "preview-home-manager-attrs-json" ''
OPTION_KEY=$1
JSON_MANUAL_PATH=$2
${jq} -C ".\"$OPTION_KEY\"" $JSON_MANUAL_PATH
'';
previewGomplate =
pkgs.writers.writeBash "preview-home-manager-attrs-gomplate" ''
OPTION_KEY=$1
JSON_MANUAL_PATH=$2
${jq} ".\"$OPTION_KEY\"" $JSON_MANUAL_PATH | ${gomplate} --datasource opt=stdin:?type=application/json --file ${template}
'';
defaultManualPath = "${
home-manager.packages.${system}.docs-json
}/share/doc/home-manager/options.json";
in pkgs.writers.writeBash "search-home-manager-attrs" ''
JSON_MANUAL_PATH="${defaultManualPath}"
for i in "$@"; do
case $i in
-h|--help)
cat ${usage}
exit 0
;;
-j|--json)
PRINT_JSON=1
shift
;;
-n|--no-preview)
NO_PREVIEW=1
shift
;;
-f=*|--flake=*)
FLAKE="''${i#*=}"
shift
;;
-r=*|--ref=*)
REF="''${i#*=}"
shift
;;
*|-*|--*)
echo "Unknown option $i"
cat ${usage}
exit 1
;;
esac
done
if [ -v PRINT_JSON ] && [ -v NO_PREVIEW ]; then
echo "Cannot preview as json with no-preview enabled"
cat ${usage}
exit 1
fi
if [ -v FLAKE ]; then
FLAKE_URL="''${FLAKE}"
if [ -v REF ]; then
FLAKE_URL="''${FLAKE_URL}?ref=$REF"
fi
FLAKE_URL="''${FLAKE_URL}#docs-json"
echo "Building docs from $FLAKE_URL"
OUT_PATH=$(${pkgs.nix}/bin/nix build "$FLAKE_URL" --no-link --print-out-paths --no-write-lock-file)
JSON_MANUAL_PATH="$OUT_PATH/share/doc/home-manager/options.json"
echo "Using docs located at $JSON_MANUAL_PATH"
fi
if [ -v NO_PREVIEW ]; then
${jq} -r 'keys | .[] | .' $JSON_MANUAL_PATH | ${fzf}
elif [ -v PRINT_JSON ]; then
${jq} -r 'keys | .[] | .' $JSON_MANUAL_PATH | ${fzf} --preview "${previewJson} {} $JSON_MANUAL_PATH"
else
${jq} -r 'keys | .[] | .' $JSON_MANUAL_PATH | ${fzf} --preview "${previewGomplate} {} $JSON_MANUAL_PATH"
fi
''

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{ pkgs, ... }: pkgs.emptyFile

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{ pkgs, ... }: pkgs.emptyFile

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{ pkgs, lib, ... }: {
# Executables
jq = "${pkgs.jq}/bin/jq";
fzf = "${pkgs.fzf}/bin/fzf";
gomplate = "${pkgs.gomplate}/bin/gomplate";
# ANSI Colors
blinkred = "\\033[31;5m";
clear = "\\033[0m";
# Misc functionality
# All empty lines, and all prefixed whitespace is removed.
flatten = with lib;
let
stripPrefixSpace = s:
if hasPrefix " " s then
stripPrefixSpace ((substring 1 (stringLength s)) s)
else
s;
in (flip pipe) [
(splitString "\n")
(remove "")
(map stripPrefixSpace)
(concatStringsSep "\n")
];
}