diff --git a/modules/plugins/languages/tex/lsp/texlab.nix b/modules/plugins/languages/tex/lsp/texlab.nix
index 2ce47dc7..58c55f5a 100644
--- a/modules/plugins/languages/tex/lsp/texlab.nix
+++ b/modules/plugins/languages/tex/lsp/texlab.nix
@@ -1,7 +1,3 @@
-# TODO:
-# - Add Texlab LSP settings:
-#   - chktex
-#   - symbols
 {
   config,
   pkgs,
@@ -9,9 +5,10 @@
   ...
 }: let
   inherit (lib.options) mkOption;
-  inherit (lib.modules) mkIf;
-  inherit (lib.types) listOf package str attrs ints enum either path nullOr;
+  inherit (lib.modules) mkIf mkMerge;
+  inherit (lib.types) attrs either enum ints listOf nullOr package path str submodule;
   inherit (lib.nvim.config) mkBool;
+  inherit (builtins) isString map;
 
   cfg = config.vim.languages.tex;
   texlabCfg = cfg.lsp.texlab;
@@ -26,51 +23,49 @@ in {
       description = "texlab package";
     };
 
-    forwardSearch = {
-      enable = mkBool false ''
-        Whether to enable forward search.
-
-        Enable this option if you want to have the compiled document appear in your chosen PDF viewer.
-
-        For some options see [here](https://github.com/latex-lsp/texlab/wiki/Previewing).
-        Note this is not all the options, but can act as a guide to help you allong with custom configs.
-      '';
+    chktex = {
+      enable = mkBool false "Whether to enable linting via chktex";
 
       package = mkOption {
         type = package;
-        default = pkgs.okular;
+        default = pkgs.texlive.withPackages (ps: [ps.chktex]);
         description = ''
-          The package to use as your PDF viewer.
-          This viewer needs to support Synctex.
+          The chktex package to use.
+          Must have the `chktex` executable.
         '';
       };
 
-      executable = mkOption {
-        type = str;
-        default = "okular";
-        description = ''
-          Defines the executable of the PDF previewer. The previewer needs to support SyncTeX.
-        '';
-      };
+      onOpenAndSave = mkBool false "Lint using chktex after opening and saving a file.";
 
-      args = mkOption {
+      onEdit = mkBool false "Lint using chktex after editing a file.";
+
+      additionalArgs = mkOption {
         type = listOf str;
-        default = [
-          "--unique"
-          "file:%p#src:%l%f"
-        ];
+        default = [];
         description = ''
-          Defines additional arguments that are passed to the configured previewer to perform the forward search.
-          The placeholders %f, %p, %l will be replaced by the server.
-
-          Placeholders:
-            - %f: The path of the current TeX file.
-            - %p: The path of the current PDF file.
-            - %l: The current line number.
+          Additional command line arguments that are passed to chktex after editing a file.
+          Don't redefine the `-I` and `-f` flags as they are set by the server.
         '';
       };
     };
 
+    completion.matcher = mkOption {
+      type = enum [
+        "fuzzy"
+        "fuzzy-ignore-case"
+        "prefix"
+        "prefix-ignore-case"
+      ];
+      default = "fuzzy-ignore-case";
+      description = ''
+        Modifies the algorithm used to filter the completion items returned to the client. Possibles values are:
+          - fuzzy: Fuzzy string matching (case sensitive)
+          - fuzzy-ignore-case: Fuzzy string matching (case insensitive)
+          - prefix: Filter out items that do not start with the search text (case sensitive)
+          - prefix-ignore-case: Filter out items that do not start with the search text (case insensitive)
+      '';
+    };
+
     diagnostics = {
       delay = mkOption {
         type = ints.positive;
@@ -104,60 +99,6 @@ in {
       };
     };
 
-    latexindent = {
-      local = mkOption {
-        type = nullOr (either str path);
-        default = null;
-        description = ''
-          Defines the path of a file containing the latexindent configuration.
-          This corresponds to the --local=file.yaml flag of latexindent.
-          By default the configuration inside the project root directory is used.
-        '';
-      };
-
-      modifyLineBreaks = mkBool false ''
-        Modifies linebreaks before, during, and at the end of code blocks when formatting with latexindent.
-        This corresponds to the --modifylinebreaks flag of latexindent.
-      '';
-
-      replacement = mkOption {
-        type = nullOr (enum ["-r" "-rv" "-rr"]);
-        default = null;
-        description = ''
-          Defines an additional replacement flag that is added when calling latexindent. This can be one of the following:
-            - "-r"
-            - "-rv"
-            - "-rr"
-            - null
-          By default no replacement flag is passed.
-        '';
-      };
-    };
-
-    completion.matcher = mkOption {
-      type = str;
-      default = "fuzzy-ignore-case";
-      description = ''
-        Modifies the algorithm used to filter the completion items returned to the client. Possibles values are:
-          - fuzzy: Fuzzy string matching (case sensitive)
-          - fuzzy-ignore-case: Fuzzy string matching (case insensitive)
-          - prefix: Filter out items that do not start with the search text (case sensitive)
-          - prefix-ignore-case: Filter out items that do not start with the search text (case insensitive)
-      '';
-    };
-
-    inlayHints = {
-      labelDefinitions = mkBool true "When enabled, the server will return inlay hints for `\\label-like` commands.";
-
-      labelReferences = mkBool true "When enabled, the server will return inlay hints for `\\ref``-like commands.";
-
-      maxLength = mkOption {
-        type = nullOr ints.positive;
-        default = null;
-        description = "When set, the server will truncate the text of the inlay hints to the specified length.";
-      };
-    };
-
     experimental = {
       followPackageLinks = mkBool false "If set to true, dependencies of custom packages are resolved and included in the dependency graph.";
 
@@ -191,6 +132,7 @@ in {
           Hint: Additional commands need to be written without a leading `\` (e. g. `foo` instead of `\foo`).
         '';
       };
+
       labelDefinitionCommands = mkOption {
         type = listOf str;
         default = [];
@@ -245,31 +187,6 @@ in {
       };
     };
 
-    formatterLineLength = mkOption {
-      type = ints.positive;
-      default = 80;
-      description = "Defines the maximum amount of characters per line (0 = disable) when formatting BibTeX files.";
-    };
-
-    bibtexFormatter = mkOption {
-      type = enum ["texlab" "latexindent"];
-      default = "texlab";
-      description = ''
-        Defines the formatter to use for BibTeX formatting.
-        Possible values are either texlab or latexindent.
-      '';
-    };
-
-    latexFormatter = mkOption {
-      type = enum ["texlab" "latexindent"];
-      default = "latexindent";
-      description = ''
-        Defines the formatter to use for LaTeX formatting.
-        Possible values are either texlab or latexindent.
-        Note that texlab is not implemented yet.
-      '';
-    };
-
     extraLuaSettings = mkOption {
       type = attrs;
       default = {};
@@ -296,9 +213,203 @@ in {
         ```
       '';
     };
+
+    forwardSearch = {
+      enable = mkBool false ''
+        Whether to enable forward search.
+
+        Enable this option if you want to have the compiled document appear in your chosen PDF viewer.
+
+        For some options see [here](https://github.com/latex-lsp/texlab/wiki/Previewing).
+        Note this is not all the options, but can act as a guide to help you allong with custom configs.
+      '';
+
+      package = mkOption {
+        type = package;
+        default = pkgs.okular;
+        description = ''
+          The package to use as your PDF viewer.
+          This viewer needs to support Synctex.
+        '';
+      };
+
+      executable = mkOption {
+        type = str;
+        default = "okular";
+        description = ''
+          Defines the executable of the PDF previewer. The previewer needs to support SyncTeX.
+        '';
+      };
+
+      args = mkOption {
+        type = listOf str;
+        default = [
+          "--unique"
+          "file:%p#src:%l%f"
+        ];
+        description = ''
+          Defines additional arguments that are passed to the configured previewer to perform the forward search.
+          The placeholders %f, %p, %l will be replaced by the server.
+
+          Placeholders:
+            - %f: The path of the current TeX file.
+            - %p: The path of the current PDF file.
+            - %l: The current line number.
+        '';
+      };
+    };
+
+    formatter = {
+      formatterLineLength = mkOption {
+        type = ints.positive;
+        default = 80;
+        description = "Defines the maximum amount of characters per line (0 = disable) when formatting BibTeX files.";
+      };
+
+      bibtexFormatter = mkOption {
+        type = enum ["texlab" "latexindent"];
+        default = "texlab";
+        description = ''
+          Defines the formatter to use for BibTeX formatting.
+          Possible values are either texlab or latexindent.
+        '';
+      };
+
+      latexFormatter = mkOption {
+        type = enum ["texlab" "latexindent"];
+        default = "latexindent";
+        description = ''
+          Defines the formatter to use for LaTeX formatting.
+          Possible values are either texlab or latexindent.
+          Note that texlab is not implemented yet.
+        '';
+      };
+    };
+
+    inlayHints = {
+      labelDefinitions = mkBool true "When enabled, the server will return inlay hints for `\\label`-like commands.";
+
+      labelReferences = mkBool true "When enabled, the server will return inlay hints for `\\ref``-like commands.";
+
+      maxLength = mkOption {
+        type = nullOr ints.positive;
+        default = null;
+        description = "When set, the server will truncate the text of the inlay hints to the specified length.";
+      };
+    };
+
+    latexindent = {
+      local = mkOption {
+        type = nullOr (either str path);
+        default = null;
+        description = ''
+          Defines the path of a file containing the latexindent configuration.
+          This corresponds to the --local=file.yaml flag of latexindent.
+          By default the configuration inside the project root directory is used.
+        '';
+      };
+
+      modifyLineBreaks = mkBool false ''
+        Modifies linebreaks before, during, and at the end of code blocks when formatting with latexindent.
+        This corresponds to the --modifylinebreaks flag of latexindent.
+      '';
+
+      replacement = mkOption {
+        type = nullOr (enum ["-r" "-rv" "-rr"]);
+        default = null;
+        description = ''
+          Defines an additional replacement flag that is added when calling latexindent. This can be one of the following:
+            - "-r"
+            - "-rv"
+            - "-rr"
+            - null
+          By default no replacement flag is passed.
+        '';
+      };
+    };
+
+    symbols = {
+      enable = mkBool false "Whether to enable setting symbols config.";
+
+      allowedPatterns = mkOption {
+        type = listOf str;
+        default = [];
+        description = ''
+          A list of regular expressions used to filter the list of reported document symbols.
+          If specified, only symbols that match at least one of the specified patterns are sent to the client.
+          Symbols are filtered recursively so nested symbols can still be sent to the client even though the
+          parent node is removed from the results.
+
+          See also `texlab.symbols.ignoredPatterns`.
+
+          Hint: If both allowedPatterns and ignoredPatterns are set, then allowed patterns are applied first.
+          Afterwards, the results are filtered with the ignored patterns.
+        '';
+      };
+
+      ignoredPatterns = mkOption {
+        type = listOf str;
+        default = [];
+        description = ''
+          A list of regular expressions used to filter the list of reported document symbols.
+          If specified, only symbols that match none of the specified patterns are sent to the client.
+
+          See also `texlab.symbols.allowedPatterns`.
+        '';
+      };
+
+      customEnvironments = mkOption {
+        type = listOf (submodule {
+          options = {
+            name = mkOption {
+              type = str;
+              description = "The name of the environment.";
+            };
+            displayName = mkOption {
+              type = nullOr str;
+              default = null;
+              description = "The name shown in the document symbols. Defaults to the value of `name`.";
+            };
+            label = mkBool false ''
+              If set, the server will try to match a label to environment and append its number.
+            '';
+          };
+        });
+        default = [];
+        example = [
+          {
+            name = "foo";
+            displayName = "bar";
+            label = false;
+          }
+        ];
+        description = ''
+          A list of objects that allows extending the list of environments that are part of the document symbols.
+
+          See also texlab.symbols.allowedPatterns.
+
+          Type: listOf submodule:
+            - name:
+              - type: str
+              - description: The name of the environment.
+              - required
+            - displayName:
+              - type: nullOr str
+              - description: The name shown in the document symbols.
+              - default: <name>
+            - label:
+              - type: boolean
+              - description: If set, the server will try to match a label to environment and append its number.
+              - default: false
+
+          Note: This functionallity may not be working, please follow https://github.com/latex-lsp/texlab/pull/1311
+          for status updates.
+        '';
+      };
+    };
   };
 
-  config = mkIf (cfg.enable && (cfg.lsp.texlab.enable)) (
+  config = mkIf cfg.enable (
     let
       # ----- Setup Config -----
       # Command to start the LSP
@@ -307,59 +418,89 @@ in {
       # Create texlab settings section
       setupConfig.settings.texlab = (
         {
-          # -- General Settings --
-          formatterLineLength = texlabCfg.formatterLineLength;
-
-          # -- Formatters --
-          bibtexFormatter = texlabCfg.bibtexFormatter;
-          latexFormatter = texlabCfg.latexFormatter;
+          # -- Completion --
+          completion.matcher = texlabCfg.completion.matcher;
 
           # -- Diagnostics --
           diagnosticsDelay = texlabCfg.diagnostics.delay;
           diagnostics = {
-            allowedPatterns = texlabCfg.diagnostics.allowedPatterns;
-            ignoredPatterns = texlabCfg.diagnostics.ignoredPatterns;
+            inherit (texlabCfg.diagnostics) allowedPatterns ignoredPatterns;
           };
 
-          # -- Latex Indent --
-          latexindent = texlabCfg.latexindent;
+          # -- Experimental --
+          experimental = texlabCfg.experimental;
 
-          # -- Completion --
-          completion.matcher = texlabCfg.completion.matcher;
+          # -- Formatters --
+          inherit (texlabCfg.formatter) formatterLineLength bibtexFormatter latexFormatter;
 
           # -- Inlay Hints --
           inlayHints = texlabCfg.inlayHints;
 
-          # -- Experimental --
-          experimental = texlabCfg.experimental;
+          # -- Latex Indent --
+          latexindent = texlabCfg.latexindent;
         }
         #
-        # -- Forward Search --
-        // (
-          if texlabCfg.forwardSearch.enable
-          then {
-            forwardSearch = {
-              executable = "${texlabCfg.forwardSearch.package}/bin/${texlabCfg.forwardSearch.executable}";
-              args = texlabCfg.forwardSearch.args;
-            };
-          }
-          else {}
-        )
-        #
         # -- Build --
         // (
           if cfg.build.enable
           then {
             build = {
+              inherit
+                (cfg.build)
+                onSave
+                useFileList
+                auxDirectory
+                logDirectory
+                pdfDirectory
+                filename
+                forwardSearchAfter
+                ;
+              inherit (builderCfg) args;
               executable = "${builderCfg.package}/bin/${builderCfg.executable}";
-              args = builderCfg.args;
-              forwardSearchAfter = cfg.build.forwardSearchAfter;
-              onSave = cfg.build.onSave;
-              useFileList = cfg.build.useFileList;
-              auxDirectory = cfg.build.auxDirectory;
-              logDirectory = cfg.build.logDirectory;
-              pdfDirectory = cfg.build.pdfDirectory;
-              filename = cfg.build.filename;
+            };
+          }
+          else {}
+        )
+        #
+        # -- Chktex --
+        // (
+          if texlabCfg.chktex.enable
+          then {
+            chktex = {
+              inherit (texlabCfg.chktex) onOpenAndSave onEdit additionalArgs;
+            };
+          }
+          else {}
+        )
+        #
+        # -- Forward Search --
+        // (
+          if texlabCfg.forwardSearch.enable
+          then {
+            forwardSearch = {
+              inherit (texlabCfg.forwardSearch) args;
+              executable = "${texlabCfg.forwardSearch.package}/bin/${texlabCfg.forwardSearch.executable}";
+            };
+          }
+          else {}
+        )
+        #
+        # -- Symbols --
+        // (
+          if texlabCfg.symbols.enable
+          then {
+            symbols = {
+              inherit (texlabCfg.symbols) allowedPatterns ignoredPatterns;
+
+              customEnvironments =
+                map (x: {
+                  inherit (x) name label;
+                  displayName =
+                    if isString x.displayName
+                    then x.displayName
+                    else x.name;
+                })
+                texlabCfg.symbols.customEnvironments;
             };
           }
           else {}
@@ -368,8 +509,14 @@ in {
         # -- Extra Settings --
         // texlabCfg.extraLuaSettings
       );
-    in {
-      vim.lsp.lspconfig.sources.texlab = "lspconfig.texlab.setup(${lib.nvim.lua.toLuaObject setupConfig})";
-    }
+    in (mkMerge [
+      (mkIf texlabCfg.enable {
+        vim.lsp.lspconfig.sources.texlab = "lspconfig.texlab.setup(${lib.nvim.lua.toLuaObject setupConfig})";
+      })
+
+      (mkIf texlabCfg.chktex.enable {
+        vim.extraPackages = [texlabCfg.chktex.package];
+      })
+    ])
   );
 }