diff --git a/default.nix b/default.nix
index 82d5d24..e751db6 100644
--- a/default.nix
+++ b/default.nix
@@ -41,6 +41,19 @@ in
       rainbow
       nvim-web-devicons
       fzf-vim
+      coc-sh
+      coc-nvim
+      coc-json
+      coc-yaml
+      coc-tsserver
+      coc-prettier
+      coc-pyright
+      coc-diagnostic
+      vimtex
+      coc-vimtex
+      coc-html
+      coc-go
+      coc-spell-checker
       editorconfig-nvim
       vim-vsnip
       # tmuxline-vim
@@ -85,13 +98,14 @@ in
           rust_analyzer = rust-analyzer;
           typst_lsp = pkgs.typst-lsp;
         };
-        pathsLua = let name = "nvim-deps.lua"; in (pkgs.writeTextDir "/${name}"
-          ''
-            deps = {}
-            ${concatStringsSep "\n" (mapAttrsToList (name: path: ''deps["${name}_path"] = "${path}"'') paths)}
-            return deps
-          '') + "/${name}";
-        
+        pathsLua = pkgs.writeTextFile {
+          name = "nvim-deps.lua";
+          text = ''
+            return {
+             ${concatStringsSep ",\n " (mapAttrsToList (name: path: ''${name}_path = "${path}"'') paths)}
+            }
+          '';
+        };
         confDir = lib.sourceFilesBySuffices ./. [ "lua" "vim" ];
       in
       with lib; ''
@@ -101,6 +115,163 @@ in
       '';
   };
   programs.git.ignores = [ ".nvim_session" ];
+  xdg.configFile."nvim/coc-settings.json".text =
+    let
+      preferProjectEnv = binName: alternate: pkgs.writeShellScript "${binName}-switcher" ''
+        if command -v ${binName}; then
+          ${binName} ''${@}
+        else
+          ${alternate} ''${@}
+        fi
+      '';
+      addSDK = { name, lsp, sdk }: with pkgs; runCommandLocal name
+        {
+          nativeBuildInputs = [ makeWrapper ];
+        } ''
+        makeWrapper ${lsp} $out \
+         --prefix PATH : ${lib.makeBinPath sdk} 
+      '';
+    in
+    builtins.toJSON {
+      python = {
+        pythonPath = preferProjectEnv "python3" (pkgs.python3 + "/bin/python3");
+        formatting.autopep8Path = "${pkgs.python3Packages.autopep8}/bin/autopep8";
+      };
+      pyright = {
+        enable = true;
+      };
+      # https://rust-analyzer.github.io/manual.html
+      rust-analyzer = {
+        cargo = {
+          allFeatures = true;
+          runBuildScripts = true;
+          autoreload = true;
+        };
+        completion = {
+          autoimport.enable = true;
+          privateEditable.enable = true;
+          fullFunctionSignatures.enable = true; # https://github.com/rust-lang/rust-analyzer/pull/15582
+          snippets = {
+            "return Err(..)" = {
+              postfix = [ "reterr" ];
+              body = ''return Err($${receiver});'';
+              description = "return expression as Err";
+              scope = "expr";
+            };
+            "format!(..)" = {
+              postfix = [ "fmt" ];
+              body = ''format!($${receiver})'';
+              description = "use receiver as format string";
+              scope = "expr";
+
+            };
+            "wrap { .. }" = {
+              postfix = [ "brace" "wrap" ];
+              body = ''{$${receiver}}'';
+              description = "wrap this type in { .. }";
+              scope = "expr";
+            };
+            "async move { .. }" = {
+              postfix = [ "asyncm" ];
+              body = ''async move {$${receiver}}'';
+              description = "wrap this type in async move { .. }";
+              scope = "expr";
+            };
+            "try { .. }" = {
+              postfix = [ "try" ];
+              body = ''let result: Result<_,_> = try {$${receiver}};'';
+              description = "wrap this type in try { .. }";
+              scope = "expr";
+            };
+            "while let Some(item) = { .. } {}" = {
+              postfix = [ "letwhile" ];
+              body = ''while let Some(item) = $${receiver} {}'';
+              description = "wrap this type in while let Some";
+              scope = "expr";
+            };
+            "let $x = $x.clone()" = {
+              postfix = [ "cloned" ];
+              body = ''let $${receiver} = $${receiver}.clone();'';
+              description = "clone a variable into a new binding";
+              scope = "expr";
+            };
+            "let $x = $x.into()" = {
+              postfix = [ "into" ];
+              body = ''let $${receiver} = $${receiver}.clone();'';
+              description = "call into() and create a new binding";
+              scope = "expr";
+            };
+            "assert_eq!($x, .. );" = {
+              postfix = [ "asseq" ];
+              body = ''assert_eq!($${receiver}, );'';
+              description = "create an assertion for the expression";
+              scope = "expr";
+            };
+          };
+        };
+        procMacro = { enable = true; attributes.enable = true; };
+        serverPath = addSDK {
+          name = "rust-env";
+          lsp = "${rust-analyzer}/bin/rust-analyzer";
+          sdk = [ rust-sdk ];
+        };
+        imports.group.enable = true;
+        inlayHints = {
+          closureReturnTypeHints.enable = false;
+        };
+        highlightRelated = {
+          yieldPoints.enable = true;
+          references.enable = true;
+          exitPoints.enable = true;
+          breakPoints.enable = true;
+        };
+        checkOnSave = {
+          #https://github.com/rust-lang/rust-clippy/issues/9560
+          enable = false;
+          allFeatures = true;
+          command = "clippy";
+          # extraArgs = [ "--message-format=json" ];
+        };
+        diagnostics = {
+          enable = true;
+          experimental.enable = true;
+        };
+        files.excludeDirs = [ "result" "target" ];
+        extraEnv = {
+          RA_LOG = "debug";
+        };
+      };
+      languageserver = {
+        ccls = {
+          command = preferProjectEnv "ccls" "${pkgs.ccls}/bin/ccls";
+          filetypes = [ "c" "cc" "cpp" "c++" "objc" "objcpp" ];
+          rootPatterns = [ ".ccls" "compile_commands.json" ".git/" ".hg/" ];
+          initializationOptions = {
+            cache = {
+              directory = "${config.xdg.cacheHome}/ccls";
+            };
+          };
+          clang.extraOptions = [ "-std=c++20" ];
+        };
+        nix = {
+          command = "${pkgs.nil}/bin/nil";
+          formatting.command = "${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt";
+          flake = {
+            autoArchive = true;
+            autoEvalInputs = true;
+          };
+          maxMemoryMB = 1024 * 4;
+          rootPatterns = [ "flake.nix" ];
+          filetypes = [ "nix" ];
+        };
+        diagnostic-languageserver = {
+          filetypes = {
+            sh = [ "${pkgs.shellcheck}/bin/shellcheck" ];
+          };
+        };
+        cSpell = { diagnosticLevel = "hint"; };
+      };
+    };
   home.sessionVariables = rec {
     EDITOR = "nvim";
     VISUAL_EDITOR = EDITOR;
diff --git a/init.lua b/init.lua
index b8fdabd..38502fb 100644
--- a/init.lua
+++ b/init.lua
@@ -128,9 +128,9 @@ neogit.setup({
 })
 local dap, dapui = require("dap"), require("dapui")
 dap.adapters.lldb = {
-    type = "executable",
-    command = deps.lldb_path .. "/bin/lldb-vscode",
-    name = "lldb"
+  type = "executable",
+  command = deps.lldb_path .. "/bin/lldb-vscode",
+  name = "lldb",
 }
 local dap_breakpoint = {
     error = {
diff --git a/rust.lua b/rust.lua
index fa4b5b3..839ba0b 100644
--- a/rust.lua
+++ b/rust.lua
@@ -114,11 +114,7 @@ vim.g.rustaceanvim = {
         -- standalone file support
         -- setting it to false may improve startup time
         standalone = true,
-<<<<<<< HEAD
         cmd = {(deps.rust_analyzer_path .. "/bin/rust-analyzer")},
-=======
-        cmd = {(deps.rust-analyzer_path .. "/bin/rust-analyzer")},
->>>>>>> f1a0d412d3356e2c660bfbbc06e083e3ef6c6f05
         capabilities = require("cmp_nvim_lsp").default_capabilities(c),
         on_attach = function(client, bufnr)
             require("lsp-inlayhints").on_attach(client, bufnr)
@@ -169,134 +165,3 @@ vim.g.rustaceanvim = {
         }
     }
 }
-<<<<<<< HEAD
-=======
-local rt = require("rust-tools")
-local deps = require("nvim-deps")
-
-rt.setup({
-    tools = { -- rust-tools options
-
-        -- how to execute terminal commands
-        -- options right now: termopen / quickfix / toggleterm / vimux
-        executor = require("rust-tools.executors").termopen,
-
-        -- callback to execute once rust-analyzer is done initializing the workspace
-        -- The callback receives one parameter indicating the `health` of the server: "ok" | "warning" | "error"
-        on_initialized = nil,
-
-        -- automatically call RustReloadWorkspace when writing to a Cargo.toml file.
-        reload_workspace_from_cargo_toml = true,
-
-        -- These apply to the default RustSetInlayHints command
-        inlay_hints = {
-            -- automatically set inlay hints (type hints)
-            -- default: true
-            auto = true,
-
-            -- Only show inlay hints for the current line
-            only_current_line = false,
-
-            -- whether to show parameter hints with the inlay hints or not
-            -- default: true
-            show_parameter_hints = true,
-
-            -- prefix for parameter hints
-            -- default: "<-"
-            parameter_hints_prefix = "<- ",
-
-            -- prefix for all the other hints (type, chaining)
-            -- default: "=>"
-            other_hints_prefix = "=> ",
-
-            -- whether to align to the length of the longest line in the file
-            max_len_align = false,
-
-            -- padding from the left if max_len_align is true
-            max_len_align_padding = 1,
-
-            -- whether to align to the extreme right or not
-            right_align = false,
-
-            -- padding from the right if right_align is true
-            right_align_padding = 7,
-
-            -- The color of the hints
-            highlight = "Comment"
-        },
-
-        -- options same as lsp hover / vim.lsp.util.open_floating_preview()
-        hover_actions = {
-
-            -- the border that is used for the hover window
-            -- see vim.api.nvim_open_win()
-            border = {
-                {"╭", "FloatBorder"}, {"─", "FloatBorder"},
-                {"╮", "FloatBorder"}, {"│", "FloatBorder"},
-                {"╯", "FloatBorder"}, {"─", "FloatBorder"},
-                {"╰", "FloatBorder"}, {"│", "FloatBorder"}
-            },
-
-            -- Maximal width of the hover window. Nil means no max.
-            max_width = nil,
-
-            -- Maximal height of the hover window. Nil means no max.
-            max_height = nil,
-
-            -- whether the hover action window gets automatically focused
-            -- default: false
-            auto_focus = false
-        },
-
-        -- settings for showing the crate graph based on graphviz and the dot
-        -- command
-        crate_graph = {
-            -- Backend used for displaying the graph
-            -- see: https://graphviz.org/docs/outputs/
-            -- default: x11
-            backend = "x11",
-            -- where to store the output, nil for no output stored (relative
-            -- path from pwd)
-            -- default: nil
-            output = nil,
-            -- true for all crates.io and external crates, false only the local
-            -- crates
-            -- default: true
-            full = true,
-
-            -- List of backends found on: https://graphviz.org/docs/outputs/
-            -- Is used for input validation and autocompletion
-            -- Last updated: 2021-08-26
-            enabled_graphviz_backends = {
-                "bmp", "cgimage", "canon", "dot", "gv", "xdot", "xdot1.2",
-                "xdot1.4", "eps", "exr", "fig", "gd", "gd2", "gif", "gtk",
-                "ico", "cmap", "ismap", "imap", "cmapx", "imap_np", "cmapx_np",
-                "jpg", "jpeg", "jpe", "jp2", "json", "json0", "dot_json",
-                "xdot_json", "pdf", "pic", "pct", "pict", "plain", "plain-ext",
-                "png", "pov", "ps", "ps2", "psd", "sgi", "svg", "svgz", "tga",
-                "tiff", "tif", "tk", "vml", "vmlz", "wbmp", "webp", "xlib",
-                "x11"
-            }
-        }
-    },
-
-    -- all the opts to send to nvim-lspconfig
-    -- these override the defaults set by rust-tools.nvim
-    -- see https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md#rust_analyzer
-    server = {
-        -- standalone file support
-        -- setting it to false may improve startup time
-        standalone = true,
-        cmd = {(deps.rust-analyzer_path .. "/bin/rust-analyzer")}
-    }, -- rust-analyzer options
-
-    -- debugging stuff
-    dap = {
-        adapter = {
-            type = "executable",
-            command = deps.lldb_path .. "lldb-vscode",
-            name = "rt_lldb"
-        }
-    }
-})
->>>>>>> f1a0d412d3356e2c660bfbbc06e083e3ef6c6f05