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home/develop/emacs: add yasnippet snippets and make snippet dirs configurable

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This commit makes two significant changes to the Emacs configuration:

1. Refactors emacs.nix to use proper NixOS module structure:
   - Converts from simple configuration to a module with options/config
   - Adds `tb.emacs.extraSnippetDirs` option to allow per-machine snippet
     directories (defaults to ~/.emacs.d/snippets/)
   - Moves yasnippet configuration from custom.el to nix-generated elisp,
     enabling dynamic snippet directory configuration via Nix

2. Adds a comprehensive collection of yasnippet snippets for multiple modes:
   - C++ mode: 50 snippets for common patterns (class, namespace, operators,
     copy/move semantics, debug helpers, documentation, threading primitives)
   - CC mode (shared C/C++): for, switch, main, include guards, etc.
   - CMake mode: if/else, foreach, function, macro, project boilerplate
   - LaTeX mode: document structure, beamer frames, figures, lists
   - Perl mode: package boilerplate, shebang
   - Python/Shell/Nix/Protobuf/Java/CSS/Dockerfile modes: horizontal rules
     and common patterns
   - Text mode: modeline snippets for locale settings

The snippets use yasnippet's inheritance system via .yas-parents files,
so c++-mode inherits from cc-mode and text-mode, reducing duplication.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Timo Bingmann
2025-12-08 22:38:18 -08:00
parent 3d098013a9
commit af6c1ba4e9
111 changed files with 951 additions and 130 deletions
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267
home/develop/emacs.nix
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@@ -1,126 +1,149 @@
{ pkgs, ... }:
{ config, pkgs, lib, ... }:
let
snippetsPath = ./emacs/snippets;
extraSnippetDirs = config.tb.emacs.extraSnippetDirs;
allSnippetDirs = [ "${snippetsPath}" ] ++ extraSnippetDirs;
snippetDirsLisp = lib.concatMapStringsSep " " (d: ''"${d}"'') allSnippetDirs;
in
{
programs.emacs = {
enable = true;
# Optionally provide extra packages not in the configuration file.
extraPackages = epkgs: with epkgs; [
# === WEB AND SERVER CONFIGURATION ===
apache-mode # Syntax highlighting for Apache config files
nginx-mode # Syntax highlighting for Nginx config files
# === HARDWARE AND EMBEDDED DEVELOPMENT ===
arduino-mode # Arduino sketch development support
# === DOCUMENT PREPARATION ===
auctex # Comprehensive LaTeX editing environment
pandoc-mode # Pandoc document converter integration
# === PROGRAMMING LANGUAGE SUPPORT ===
basic-mode # BASIC programming language support
bison-mode # Bison parser generator syntax
cmake-mode # CMake build system configuration
coffee-mode # CoffeeScript programming language
csharp-mode # C# programming language
groovy-mode # Groovy/Jenkins pipeline scripting
go-mode # Go programming language
haskell-mode # Haskell functional programming
js2-mode # Enhanced JavaScript editing mode
lua-mode # Lua scripting language
php-mode # PHP web development
python-mode # Python programming language
scala-mode # Scala programming language
# === MARKUP AND DATA FORMATS ===
csv-mode # Comma-separated values file editing
dockerfile-mode # Docker container definition files
jinja2-mode # Jinja2 template engine syntax
markdown-mode # Markdown markup language
nix-mode # Nix expression language (NixOS configs)
protobuf-mode # Protocol Buffers schema definitions
qml-mode # Qt QML user interface markup
yaml-mode # YAML configuration files
gnuplot-mode # Gnuplot script editing and plotting integration
# === SEARCH AND FILE UTILITIES ===
rg # Ripgrep searcher integration for fast text search
diredfl # Enhanced font-locking for dired mode
dired-ranger # File operations with copy/move/paste semantics
# === TEXT COMPLETION AND PRODUCTIVITY ===
company # Text completion framework
smex # Enhanced M-x command with history
# === USER INTERFACE ENHANCEMENTS ===
diminish # Hide minor modes from the mode line
smooth-scrolling # Smoother scrolling experience
rainbow-delimiters # Color-code nested parentheses/brackets
# === ENVIRONMENT AND PROJECT MANAGEMENT ===
direnv # Environment variable management per directory
projectile # Project interaction and navigation library
# === LANGUAGE SERVER PROTOCOL (LSP) ===
# Modern language support with intelligent features
eglot # Built-in LSP client (simpler alternative to lsp-mode)
lsp-mode # Comprehensive Language Server Protocol client
lsp-java # Java language server integration
lsp-metals # Scala language server (Metals) integration
eglot-java # Java support for eglot LSP client
sbt-mode # Scala Build Tool integration
dap-mode # Debug Adapter Protocol for debugging support
# === SYNTAX CHECKING ===
flycheck # On-the-fly syntax checking framework
# === VERSION CONTROL ===
git-link # Generate links to Git repository web interfaces
magit # Comprehensive Git porcelain for Emacs
# === TEXT EDITING ENHANCEMENTS ===
goto-last-change # Jump to the location of last edit
iedit # Edit multiple occurrences of text simultaneously
bm # Visual bookmarks for quick navigation
# === CODE FORMATTING AND CLEANUP ===
web-beautify # Format and beautify web code (HTML/CSS/JS)
ethan-wspace # Automatically clean up whitespace on save
# === PARENTHESES AND STRUCTURE EDITING ===
paredit # Balanced parentheses editing for Lisp-like languages
smartparens # Smart handling of pairs (parentheses, quotes, etc.)
# === SNIPPETS AND TEMPLATES ===
yasnippet # Template system for inserting code snippets
quelpa-use-package # Package management for packages not in MELPA
# === VISUAL THEMES ===
grandshell-theme # Dark theme with good contrast
leuven-theme # Light theme designed for readability
# === TREE-SITTER GRAMMARS ===
# Modern syntax highlighting and parsing using tree-sitter
treesit-grammars.with-all-grammars # All available tree-sitter language grammars
# === TREE-SITTER BASED MODES ===
# These modes use tree-sitter for better performance and accuracy
awk-ts-mode # AWK script editing with tree-sitter
dart-mode # Dart programming (Flutter development)
graphql-ts-mode # GraphQL query language with tree-sitter
jq-ts-mode # jq JSON processor with tree-sitter
markdown-ts-mode # Markdown with tree-sitter parsing
mermaid-ts-mode # Mermaid diagram syntax with tree-sitter
scala-ts-mode # Scala with tree-sitter (alternative to scala-mode)
swift-ts-mode # Swift programming with tree-sitter
];
extraConfig = builtins.readFile ./emacs/custom.el;
options.tb.emacs.extraSnippetDirs = lib.mkOption {
type = lib.types.listOf lib.types.path;
default = ["~/.emacs.d/snippets/"];
description = "Additional snippet directories for yasnippet";
};
# System packages required by various emacs packages
home.packages = with pkgs; [
# Search and file utilities
ripgrep # Required for rg package
];
config = {
programs.emacs = {
enable = true;
# Optionally provide extra packages not in the configuration file.
extraPackages = epkgs: with epkgs; [
# === WEB AND SERVER CONFIGURATION ===
apache-mode # Syntax highlighting for Apache config files
nginx-mode # Syntax highlighting for Nginx config files
# === HARDWARE AND EMBEDDED DEVELOPMENT ===
arduino-mode # Arduino sketch development support
# === DOCUMENT PREPARATION ===
auctex # Comprehensive LaTeX editing environment
pandoc-mode # Pandoc document converter integration
# === PROGRAMMING LANGUAGE SUPPORT ===
basic-mode # BASIC programming language support
bison-mode # Bison parser generator syntax
cmake-mode # CMake build system configuration
coffee-mode # CoffeeScript programming language
csharp-mode # C# programming language
groovy-mode # Groovy/Jenkins pipeline scripting
go-mode # Go programming language
haskell-mode # Haskell functional programming
js2-mode # Enhanced JavaScript editing mode
lua-mode # Lua scripting language
php-mode # PHP web development
python-mode # Python programming language
scala-mode # Scala programming language
# === MARKUP AND DATA FORMATS ===
csv-mode # Comma-separated values file editing
dockerfile-mode # Docker container definition files
jinja2-mode # Jinja2 template engine syntax
markdown-mode # Markdown markup language
nix-mode # Nix expression language (NixOS configs)
protobuf-mode # Protocol Buffers schema definitions
qml-mode # Qt QML user interface markup
yaml-mode # YAML configuration files
gnuplot-mode # Gnuplot script editing and plotting integration
# === SEARCH AND FILE UTILITIES ===
rg # Ripgrep searcher integration for fast text search
diredfl # Enhanced font-locking for dired mode
dired-ranger # File operations with copy/move/paste semantics
# === TEXT COMPLETION AND PRODUCTIVITY ===
company # Text completion framework
smex # Enhanced M-x command with history
# === USER INTERFACE ENHANCEMENTS ===
diminish # Hide minor modes from the mode line
smooth-scrolling # Smoother scrolling experience
rainbow-delimiters # Color-code nested parentheses/brackets
# === ENVIRONMENT AND PROJECT MANAGEMENT ===
direnv # Environment variable management per directory
projectile # Project interaction and navigation library
# === LANGUAGE SERVER PROTOCOL (LSP) ===
# Modern language support with intelligent features
eglot # Built-in LSP client (simpler alternative to lsp-mode)
lsp-mode # Comprehensive Language Server Protocol client
lsp-java # Java language server integration
lsp-metals # Scala language server (Metals) integration
eglot-java # Java support for eglot LSP client
sbt-mode # Scala Build Tool integration
dap-mode # Debug Adapter Protocol for debugging support
# === SYNTAX CHECKING ===
flycheck # On-the-fly syntax checking framework
# === VERSION CONTROL ===
git-link # Generate links to Git repository web interfaces
magit # Comprehensive Git porcelain for Emacs
# === TEXT EDITING ENHANCEMENTS ===
goto-last-change # Jump to the location of last edit
iedit # Edit multiple occurrences of text simultaneously
bm # Visual bookmarks for quick navigation
# === CODE FORMATTING AND CLEANUP ===
web-beautify # Format and beautify web code (HTML/CSS/JS)
ethan-wspace # Automatically clean up whitespace on save
# === PARENTHESES AND STRUCTURE EDITING ===
paredit # Balanced parentheses editing for Lisp-like languages
smartparens # Smart handling of pairs (parentheses, quotes, etc.)
# === SNIPPETS AND TEMPLATES ===
yasnippet # Template system for inserting code snippets
quelpa-use-package # Package management for packages not in MELPA
# === VISUAL THEMES ===
grandshell-theme # Dark theme with good contrast
leuven-theme # Light theme designed for readability
# === TREE-SITTER GRAMMARS ===
# Modern syntax highlighting and parsing using tree-sitter
treesit-grammars.with-all-grammars # All available tree-sitter language grammars
# === TREE-SITTER BASED MODES ===
# These modes use tree-sitter for better performance and accuracy
awk-ts-mode # AWK script editing with tree-sitter
dart-mode # Dart programming (Flutter development)
graphql-ts-mode # GraphQL query language with tree-sitter
jq-ts-mode # jq JSON processor with tree-sitter
markdown-ts-mode # Markdown with tree-sitter parsing
mermaid-ts-mode # Mermaid diagram syntax with tree-sitter
scala-ts-mode # Scala with tree-sitter (alternative to scala-mode)
swift-ts-mode # Swift programming with tree-sitter
];
extraConfig = builtins.readFile ./emacs/custom.el + ''
;; Yasnippet configuration (generated by nix)
(use-package yasnippet
:init
(setq yas-snippet-dirs '(${snippetDirsLisp}))
:config
(yas-reload-all)
(yas-global-mode 1))
'';
};
# System packages required by various emacs packages
home.packages = with pkgs; [
# Search and file utilities
ripgrep # Required for rg package
];
};
}