Update to (somewhat?) dendritic pattern

Heavily inspired by https://github.com/Doc-Steve/dendritic-design-with-flake-parts.

> Atomic commits? Never heard of them!

modules/programs/nixvim/_nixvim-config/default.nix

@@ -0,0 +1,19 @@
+{ ... }: {
+  imports = [
+    ./keymaps.nix
+    ./options.nix
+    ./plugins
+  ];
+
+  clipboard.register = "unnamedplus";
+
+  colorschemes.catppuccin = {
+    enable = true;
+    settings.flavour = "mocha";
+    settings.integrations = {
+      gitsigns = true;
+      treesitter = true;
+      cmp = true;
+    };
+  };
+}

modules/programs/nixvim/_nixvim-config/keymaps.nix

@@ -0,0 +1,25 @@
+{ ... }: {
+  globals.mapleader = " ";
+
+  keymaps = [
+    {
+      key = "<esc>";
+      action = ":noh<CR>";
+      mode = "n";
+      options = {
+        silent = true;
+        desc = "Clear search highlight";
+      };
+    }
+    {
+      key = "j";
+      action = "gj";
+      mode = "n";
+    }
+    {
+      key = "k";
+      action = "gk";
+      mode = "n";
+    }
+  ];
+}

modules/programs/nixvim/_nixvim-config/options.nix

@@ -0,0 +1,50 @@
+{ ... }: {
+  opts = {
+    # Expand tabs to 4 spaces
+    shiftwidth = 4;
+    softtabstop = 4;
+    expandtab = true;
+
+    signcolumn = "yes:3";
+
+    # automatically indent and try to be smart about it
+    autoindent = true;
+    smartindent = true;
+
+    # Relative line numbers
+    number = true;
+    relativenumber = true;
+
+    # See search result as you type
+    inccommand = "split";
+
+    # Visualize whitespace
+    list = true;
+    listchars = {
+      tab = "» ";
+      trail = "·";
+      nbsp = "␣";
+    };
+
+    # Show which line the cursor is on
+    cursorline = true;
+
+    # Keep the cursor somewhat centered on the screen
+    scrolloff = 25;
+
+    # Ask if operations would fail due to unsaved buffers
+    confirm = true;
+
+    # ignore case in search unless multiple capital case letter have been typed
+    smartcase = true;
+    ignorecase = true;
+
+    completeopt = "menu,menuone,noselect";
+
+    # Persistent undos :)
+    undofile = true;
+
+    # enable resize by mouse
+    mouse = "n";
+  };
+}

modules/programs/nixvim/_nixvim-config/plugins/cmp/default.nix

@@ -0,0 +1,42 @@
+{ ... }: {
+  imports = [
+    ./keymaps.nix
+  ];
+
+  plugins = {
+    lspkind.enable = true;
+
+    cmp-nvim-lsp-signature-help.enable = true;
+
+    cmp = {
+      enable = true;
+      autoEnableSources = true;
+      autoLoad = true;
+
+      settings.sources = [
+        { name = "nvim_lsp"; }
+        { name = "nvim_lsp_signature_help"; }
+        { name = "path"; }
+      ];
+
+      settings.mapping = {
+        "<Tab>" = "cmp.mapping.select_next_item()";
+        "<S-Tab>" = "cmp.mapping.select_prev_item()";
+        "<C-Space>" = "cmp.mapping.complete()";
+        "<C-S-Space>" = "cmp.mapping.close()";
+        "<CR>" = "cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Insert, select = true })";
+      };
+    };
+
+    lsp-format.enable = true;
+
+    none-ls = {
+      enable = true;
+      enableLspFormat = true;
+      sources.formatting = {
+        alejandra.enable = true;
+        nixpkgs_fmt.enable = true;
+      };
+    };
+  };
+}

modules/programs/nixvim/_nixvim-config/plugins/cmp/keymaps.nix

@@ -0,0 +1,16 @@
+{ ... }: {
+  keymaps = [
+    {
+      key = "grd";
+      action = "<cmd>Telescope lsp_definitions<CR>";
+      mode = "n";
+      options.desc = "LSP: [G]oto [D]efinition";
+    }
+    {
+      key = "gri";
+      action = "<cmd>Telescope lsp_implementations<CR>";
+      mode = "n";
+      options.desc = "LSP: [G]oto [I]mplementations";
+    }
+  ];
+}

modules/programs/nixvim/_nixvim-config/plugins/default.nix

@@ -0,0 +1,24 @@
+{ ... }: {
+  imports = [
+    ./lsp.nix
+    ./telescope
+    ./cmp
+  ];
+
+  plugins = {
+    lualine.enable = true;
+
+    web-devicons.enable = true;
+
+    treesitter = {
+      enable = true;
+      autoLoad = true;
+    };
+
+    gitsigns.enable = true;
+
+    which-key.enable = true;
+
+    glow.enable = true;
+  };
+}

modules/programs/nixvim/_nixvim-config/plugins/lsp.nix

@@ -0,0 +1,36 @@
+{ ... }: {
+  dependencies.rust-analyzer.enable = true;
+
+  lsp = {
+    inlayHints.enable = true;
+    servers = {
+      "*" = {
+        config.capabilities.textDocument.semanticTokens.multilineTokenSupport = true;
+        config.root_markers = [
+          ".git"
+        ];
+      };
+      clangd = {
+        enable = true;
+        config.root_markers = [
+          "compile_commands.json"
+        ];
+      };
+      rust_analyzer = {
+        enable = true;
+      };
+      rnix.enable = true;
+    };
+
+    keymaps = [
+      {
+        key = "<leader>e";
+        action = "<cmd>lua vim.diagnostic.open_float()<CR>";
+        options.desc = "Open Diagnostics";
+      }
+    ];
+  };
+
+  plugins.lspconfig.enable = true;
+  plugins.clangd-extensions.enable = true;
+}

modules/programs/nixvim/_nixvim-config/plugins/telescope/default.nix

@@ -0,0 +1,20 @@
+{ ... }: {
+  imports = [
+    ./keymaps.nix
+  ];
+  dependencies.ripgrep.enable = true;
+
+  plugins.telescope = {
+    enable = true;
+    extensions.file-browser = {
+      enable = true;
+      settings = {
+        git_status = true;
+        hijack_netrw = true;
+        respect_gitignore = true;
+        fzf-native.enable = true;
+        fzf-native.settings.case_mode = "ignore_case";
+      };
+    };
+  };
+}

modules/programs/nixvim/_nixvim-config/plugins/telescope/keymaps.nix

@@ -0,0 +1,24 @@
+{ ... }: {
+  keymaps = [
+    {
+      key = "<leader>sf";
+      action = "<cmd>Telescope find_files<CR>";
+      options.desc = "[S]earch [F]iles";
+    }
+    {
+      key = "<leader>sg";
+      action = "<cmd>Telescope live_grep<CR>";
+      options.desc = "[S]earch by [G]rep";
+    }
+    {
+      key = "<leader>sw";
+      action = "<cmd>Telescope grep_string<CR>";
+      options.desc = "[S]earch current [W]ord";
+    }
+    {
+      key = "<leader>q";
+      action = "<cmd>Telescope diagnostics<CR>";
+      options.desc = "Lsp Diagnostics";
+    }
+  ];
+}

modules/programs/nixvim/nixvim.nix

@@ -0,0 +1,19 @@
+{ inputs, ... }: {
+  flake-file.inputs = {
+    nixvim.url = "github:nix-community/nixvim/nixos-25.11";
+    nixvim.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  flake.modules.homeManager.nixvim = {
+    imports = [
+      inputs.nixvim.homeModules.nixvim
+    ];
+
+    programs.nixvim = {
+      enable = true;
+      imports = [ ./_nixvim-config ];
+    };
+
+    home.sessionVariables.EDITOR = "nvim";
+  };
+}