Initial shared NixOS modules

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1750506804,
+        "narHash": "sha256-VLFNc4egNjovYVxDGyBYTrvVCgDYgENp5bVi9fPTDYc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "4206c4cb56751df534751b058295ea61357bbbaa",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,36 @@
+{
+  description = "Timo's Shared Nix Modules";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs, ... }:
+    {
+      # System Modules
+      nixosModules.default = { ... }: {
+        imports = [
+          ./system/default/editor.nix
+          ./system/default/nix.nix
+          ./system/default/packages.nix
+          ./system/default/system.nix
+        ];
+      };
+
+      # Home Manager Modules
+      homeManagerModules.default = { ... }: {
+        imports = [
+          ./home/default/bash.nix
+          ./home/default/basic.nix
+          ./home/default/direnv.nix
+          ./home/default/git.nix
+        ];
+      };
+
+      homeManagerModules.develop = { ... }: {
+        imports = [
+          ./home/develop/emacs.nix
+        ];
+      };
+    };
+}

home/default/bash.nix

@@ -0,0 +1,10 @@
+{ ... }:
+{
+  programs.bash = {
+    enable = true;
+    historyFileSize = 2000000000;
+    historySize = 100000000;
+    shellOptions = [ "histappend" "cmdhist" ];
+    historyControl = [ "ignoredups" "ignorespace" ];
+  };
+}

home/default/basic.nix

@@ -0,0 +1,9 @@
+{ config, lib, ... }:
+{
+  # Let Home Manager install and manage itself.
+  programs.home-manager.enable = true;
+
+  # Home Manager needs a bit of information about you and the paths it should manage.
+  home.username = lib.mkDefault "tb";
+  home.homeDirectory = lib.mkDefault "/home/${config.home.username}";
+}

home/default/direnv.nix

@@ -0,0 +1,11 @@
+{ ... }:
+{
+  programs.direnv = {
+    enable = true;
+    enableBashIntegration = true;
+
+    nix-direnv = {
+      enable = true;
+    };
+  };
+}

home/default/git.nix

@@ -0,0 +1,21 @@
+{ ... }:
+{
+  programs.git = {
+    enable = true;
+    lfs.enable = true;
+
+    extraConfig = {
+      pull.ff = "only";
+
+      merge.conflictstyle = "zdiff3";
+      init.defaultBranch = "main";
+      diff.algorithm = "histogram";
+
+      transfer.fsckobjects = true;
+      fetch.fsckobjects = true;
+      receive.fsckObjects = true;
+
+      log.date = "iso";
+    };
+  };
+}

home/develop/emacs.nix

@@ -0,0 +1,128 @@
+{ ... }:
+{
+  programs.emacs = {
+    enable = true;
+
+    # Optionally provide extra packages not in the configuration file.
+    extraPackages = epkgs: with epkgs; [
+
+      # === SEARCH AND FILE UTILITIES ===
+      ag                      # Silver searcher integration for fast text search
+
+      # === 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
+      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
+
+      # === 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)
+      whitespace-cleanup-mode # 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
+
+      #"dired+"
+      #dired-copy-paste
+      #frame-cmds
+      #frame-fns
+      #sourcepair
+      #zoom-frm
+    ];
+
+    extraConfig = ''
+        (setq standard-indent 2)
+
+        (load-theme 'grandshell t)
+      '';
+  };
+}

system/default/editor.nix

@@ -0,0 +1,8 @@
+{ ... }:
+{
+  # Configure nano as a more user-friendly editor
+  environment.variables = {
+    EDITOR = "nano";
+    VISUAL = "nano";
+  };
+}

system/default/nix.nix

@@ -0,0 +1,56 @@
+{ ... }:
+{
+  # Nix package manager configuration
+  nix = {
+    settings = {
+      # Enable experimental features for modern Nix functionality
+      # - "nix-command": Enables the new unified 'nix' command interface
+      # - "flakes": Enables Nix flakes for reproducible and composable configurations
+      experimental-features = "nix-command flakes";
+
+      # Specify which users are allowed to run nix commands
+      allowed-users = [ "tb" ];
+
+      # Users who can act as trusted users (can override settings)
+      # Trusted users can use --option flags and import from derivations
+      trusted-users = [ "root" "tb" ];
+
+      # Show more lines of build output on failure
+      log-lines = 50;
+    };
+
+    # Automatic garbage collection configuration
+    # Helps manage disk space by cleaning up unused store paths
+    gc = {
+      # Enable automatic garbage collection
+      automatic = true;
+
+      # Delete store paths older than 30 days during garbage collection
+      options = "--delete-older-than 30d";
+    };
+
+    # Automatic store optimization configuration
+    # Reduces disk usage by hard-linking identical files in the Nix store
+    optimise = {
+      # Enable automatic store optimization
+      # This deduplicates files to save disk space
+      automatic = true;
+
+      # Run optimization weekly
+      dates = [ "weekly" ];
+    };
+  };
+
+  # Nixpkgs package collection configuration
+  nixpkgs = {
+    config = {
+      # Allow installation of packages with non-free licenses
+      # This includes proprietary software like Discord, Slack, etc.
+      # Without this, only free/open-source packages can be installed
+      allowUnfree = true;
+
+      # Allow packages marked as broken (use with caution)
+      #allowBroken = false;
+    };
+  };
+}

system/default/packages.nix

@@ -0,0 +1,143 @@
+# Default commandline utility packages.
+# These are installed on all systems for essential functionality.
+# Organized by category for maintainability.
+
+{ config, pkgs, ... }: {
+
+  environment.systemPackages = with pkgs; [
+
+    # === CORE SYSTEM UTILITIES ===
+    # Essential command-line tools for basic system operations
+
+    bc                 # Command-line calculator
+    coreutils          # Basic file, shell and text manipulation utilities
+    file               # Determine file types
+    which              # Locate commands in PATH
+
+    # === TEXT EDITORS AND VIEWERS ===
+    # Basic text editing and viewing capabilities
+
+    nano               # Simple, user-friendly text editor
+
+    # === VERSION CONTROL ===
+    # Source code management
+
+    git                # Distributed version control system
+
+    # === SEARCH AND FILTERING ===
+    # Tools for finding and processing text/files
+
+    gnugrep            # Pattern matching and text search
+    ripgrep            # Fast text search tool (rg)
+
+    # === FILE MANAGERS ===
+    # Interactive file management
+
+    mc                 # Midnight Commander - text-based file manager
+
+    # === NETWORK UTILITIES ===
+    # Network diagnostics and file transfer
+
+    curl               # Command-line HTTP client
+    nmap               # Network exploration and security auditing
+    openssl            # Cryptographic toolkit and SSL/TLS library
+    wget               # File downloader
+
+    # === SYNC AND BACKUP ===
+    # File synchronization and backup tools
+
+    rclone             # Cloud storage sync tool
+    rsync              # Fast, versatile file copying tool
+
+    # === FILE UTILITIES ===
+    # File manipulation and organization
+
+    jq                 # JSON processor
+    ncdu               # Disk usage analyzer with ncurses interface
+    pv                 # Progress viewer for data through pipes
+    renameutils        # Bulk file renaming utilities
+
+    # === COMPRESSION AND ARCHIVES ===
+    # Support for various compression formats
+
+    lzip               # Lzip compression
+    pigz               # Parallel gzip implementation
+    unzip              # Extract ZIP archives
+    xz                 # XZ compression utilities
+    zip                # Create ZIP archives
+    zstd               # Zstandard compression
+
+    # === SYSTEM MONITORING ===
+    # Performance monitoring and system information
+
+    bmon               # Network bandwidth monitor
+    htop               # Interactive process viewer
+    lsof               # List open files and network connections
+
+    # === TERMINAL AND SHELL ===
+    # Terminal functionality and shell tools
+
+    screen             # Terminal multiplexer
+    rxvt-unicode-unwrapped.terminfo  # Terminal info for urxvt
+
+    # === DEVELOPMENT TOOLS ===
+    # Development and debugging utilities
+
+    xxd                # Hex dump utility
+
+    # === HARDWARE UTILITIES ===
+    # Hardware information and diagnostics
+
+    lshw               # Hardware information tool
+    pciutils           # PCI bus utilities (lspci)
+    smartmontools      # Hard drive health monitoring
+
+    # === DISK AND STORAGE ===
+    # Storage testing and management
+
+    disk-filltest      # Disk testing utility
+
+  ] ++ (if pkgs.stdenv.isLinux then [
+    # === LINUX-SPECIFIC PACKAGES ===
+    # Packages that are only available/useful on Linux systems
+
+    # --- KERNEL AND SYSTEM ---
+
+    config.boot.kernelPackages.cpupower  # CPU frequency utilities
+
+    # --- NETWORK ADMINISTRATION ---
+
+    iptables           # Firewall administration
+    ethtool            # Ethernet device configuration
+
+    # --- HARDWARE MANAGEMENT ---
+
+    hdparm             # Hard disk parameter tuning
+    usbutils           # USB device utilities (lsusb)
+    dmidecode          # DMI/SMBIOS information
+
+    # --- PROCESS AND SYSTEM MONITORING ---
+
+    iotop              # I/O monitoring by process
+    psmisc             # Additional process utilities (killall, pstree)
+
+    # --- COMPRESSION (Linux-specific) ---
+
+    unrar              # Extract RAR archives (non-free)
+
+    # --- FILE SYSTEM UTILITIES ---
+
+    inotify-tools      # File system event monitoring
+    sshfs              # Mount remote filesystems over SSH
+
+  ] else [
+  ]) ++ (if pkgs.stdenv.isDarwin then [
+
+    # === MACOS-SPECIFIC PACKAGES ===
+    # Packages specifically for macOS systems
+
+    # Currently empty - add macOS-specific tools here as needed
+    # Examples: darwin.apple_sdk.frameworks.Security
+
+  ] else []);
+}

system/default/system.nix

@@ -0,0 +1,15 @@
+{ ... }:
+{
+  # Environment package management
+  # Remove unnecessary default packages to keep system minimal
+  # Default packages usually include basic utilities that might not be needed
+  environment.defaultPackages = [ ];
+
+  # Clean up temporary files on every boot
+  # This prevents /tmp from accumulating old files and filling up
+  boot.tmp.cleanOnBoot = true;
+
+  # Disable coredumps to prevent filling up /var/lib/systemd/coredump/
+  # Coredumps can quickly consume large amounts of disk space
+  systemd.coredump.enable = false;
+}