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/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";
+    }
+  ];
+}