Implement env filter (#876)

* Implement `envs` command to make easier debugging GH-755 and developing GH-853

* Rewrite the command with ruby, the pipeline_w much helps for daily use. So closes GH-825 for now

.rubocop.yml

@@ -0,0 +1,154 @@
+# TODO: Extract to another repository for use of inheritance
+
+AllCops:
+  TargetRubyVersion: 3.3
+  DisplayCopNames: true
+  DisabledByDefault: true
+  Exclude:
+    - 'dependencies'
+    - '.direnv'
+    - 'result'
+    - 'dist'
+  NewCops: disable
+
+Security:
+  Enabled: true
+
+Style/HashSyntax:
+  Enabled: true
+
+Style/TrailingMethodEndStatement:
+  Enabled: true
+
+Style/MethodDefParentheses:
+  Enabled: true
+
+Style/TrailingCommaInBlockArgs:
+  Enabled: true
+
+Style/StringLiterals:
+  Enabled: true
+  EnforcedStyle: 'single_quotes'
+
+Style/StringLiteralsInInterpolation:
+  Enabled: true
+  EnforcedStyle: 'single_quotes'
+
+Style/TopLevelMethodDefinition:
+  Enabled: true
+
+Style/InPatternThen:
+  Enabled: true
+
+Style/HashEachMethods:
+  Enabled: true
+
+Style/QuotedSymbols:
+  Enabled: true
+  EnforcedStyle: 'single_quotes'
+
+Style/MultilineInPatternThen:
+  Enabled: true
+
+Layout:
+  Enabled: true
+
+Layout/TrailingEmptyLines:
+  Enabled: true
+
+Layout/TrailingWhitespace:
+  Enabled: true
+
+Layout/SpaceBeforeFirstArg:
+  Enabled: true
+
+Layout/SpaceBeforeSemicolon:
+  Enabled: true
+
+Layout/SpaceInsideArrayPercentLiteral:
+  Enabled: true
+
+Layout/SpaceInsideBlockBraces:
+  Enabled: true
+
+Layout/SpaceInsideParens:
+  Enabled: true
+
+Layout/SpaceInsidePercentLiteralDelimiters:
+  Enabled: true
+
+Layout/SpaceInsideRangeLiteral:
+  Enabled: true
+
+Layout/SpaceInsideReferenceBrackets:
+  Enabled: true
+
+Layout/SpaceInsideStringInterpolation:
+  Enabled: true
+
+Layout/SpaceAroundMethodCallOperator:
+  Enabled: true
+
+Layout/SpaceAroundKeyword:
+  Enabled: true
+
+Layout/ArgumentAlignment:
+  Enabled: true
+
+Layout/CaseIndentation:
+  Enabled: true
+
+Layout/SpaceInLambdaLiteral:
+  Enabled: true
+  EnforcedStyle: require_space
+
+Layout/SpaceBeforeBlockBraces:
+  Enabled: true
+
+Naming/MethodName:
+  Enabled: true
+
+Naming/FileName:
+  Enabled: true
+
+Naming/ConstantName:
+  Enabled: true
+
+Naming/ClassAndModuleCamelCase:
+  Enabled: true
+
+Naming/BlockParameterName:
+  Enabled: true
+
+Naming/HeredocDelimiterCase:
+  Enabled: true
+
+Bundler:
+  Enabled: true
+
+Bundler/OrderedGems:
+  Enabled: false
+
+Gemspec:
+  Enabled: true
+
+Gemspec/OrderedDependencies:
+  Enabled: false
+
+Lint:
+  Enabled: true
+
+Lint/InheritException:
+  Enabled: false
+
+Lint/RedundantStringCoercion:
+  Enabled: false
+
+Lint/UnusedMethodArgument:
+  Enabled: false
+
+Lint/AssignmentInCondition:
+  Enabled: false
+
+Lint/RescueException:
+  Enabled: false

flake.nix

@@ -85,6 +85,8 @@
                 go_1_23
                 goreleaser
                 trivy
+
+                (ruby_3_3.withPackages (ps: with ps; [ rubocop ]))
               ])
               ++ (with edge-pkgs; [
                 nixd
@@ -104,6 +106,7 @@
         micro-nordcolors = homemade-packages.${system}.micro-nordcolors;
         micro-everforest = homemade-packages.${system}.micro-everforest;
         micro-catppuccin = homemade-packages.${system}.micro-catppuccin;
+        envs = homemade-packages.${system}.envs;
       });
 
       apps = forAllSystems (
@@ -132,6 +135,7 @@
               "git-log-simple"
               "git-resolve-conflict"
               "gh-prs"
+              "envs"
               "nix-hash-url"
               "reponame"
               "gredit"

home-manager/packages.nix

@@ -126,6 +126,7 @@
   p
   g
   walk
+  envs
   ir
   updeps
   bench_shells

pkgs/default.nix

@@ -50,6 +50,8 @@
 
   gh-prs = import ./gh-prs { inherit pkgs; };
 
+  envs = import ./envs { inherit pkgs; };
+
   reponame = import ./reponame { inherit pkgs; };
 
   beedii = pkgs.callPackage ./beedii { };

pkgs/envs/default.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+pkgs.writeShellApplication rec {
+  name = "envs";
+  text = builtins.readFile ./${name}.bash;
+  runtimeInputs = with pkgs; [
+    fzf
+    ruby_3_3 # pkgs.writers.writeRuby and writeRubyBin does not fit
+  ];
+  runtimeEnv = {
+    RUBY_SCRIPT_PATH = ./${name}.rb;
+  };
+}

pkgs/envs/envs.bash

@@ -0,0 +1 @@
+ruby -w "$RUBY_SCRIPT_PATH" "$@"

pkgs/envs/envs.rb

@@ -0,0 +1,17 @@
+require 'open3'
+
+shortner = -> str {
+  limit = 70
+  length = str.size
+  str.slice(...limit).gsub("\n", ' ') + (length > limit ? '...' : '')
+}
+
+envs = ENV.sort.map { |k, v| "#{k}=#{shortner.(v)}" }
+
+fzf_query = ARGV.first
+
+Open3.pipeline_w(
+  %Q!fzf --delimiter '=' --nth '1' --query "#{fzf_query}"!
+) do |first_stdin, _wait_thrs|
+  first_stdin.puts envs
+end