languages/nix: deprecate rnix language server option

Abandoned, archived and wildly outdated.

flake.lock

@@ -51,27 +51,6 @@
         "type": "github"
       }
     },
-    "naersk": {
-      "inputs": {
-        "nixpkgs": [
-          "rnix-lsp",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1655042882,
-        "narHash": "sha256-9BX8Fuez5YJlN7cdPO63InoyBy7dm3VlJkkmTt6fS1A=",
-        "owner": "nix-community",
-        "repo": "naersk",
-        "rev": "cddffb5aa211f50c4b8750adbec0bbbdfb26bb9f",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "naersk",
-        "type": "github"
-      }
-    },
     "nil": {
       "inputs": {
         "flake-utils": [
@@ -124,22 +103,6 @@
         "url": "https://github.com/NixOS/nixpkgs/archive/5487e69da40cbd611ab2cadee0b4637225f7cfae.tar.gz"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1656753965,
-        "narHash": "sha256-BCrB3l0qpJokOnIVc3g2lHiGhnjUi0MoXiw6t1o8H1E=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "0ea7a8f1b939d74e5df8af9a8f7342097cdf69eb",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nmd": {
       "flake": false,
       "locked": {
@@ -2110,26 +2073,6 @@
         "type": "github"
       }
     },
-    "rnix-lsp": {
-      "inputs": {
-        "naersk": "naersk",
-        "nixpkgs": "nixpkgs_2",
-        "utils": "utils"
-      },
-      "locked": {
-        "lastModified": 1669555118,
-        "narHash": "sha256-F0s0m62S5bHNVWNHLZD6SeHiLrsDx98VQbRjDyIu+qQ=",
-        "owner": "nix-community",
-        "repo": "rnix-lsp",
-        "rev": "95d40673fe43642e2e1144341e86d0036abd95d9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "rnix-lsp",
-        "type": "github"
-      }
-    },
     "root": {
       "inputs": {
         "flake-parts": "flake-parts",
@@ -2260,7 +2203,6 @@
         "plugin-vim-repeat": "plugin-vim-repeat",
         "plugin-vim-startify": "plugin-vim-startify",
         "plugin-which-key": "plugin-which-key",
-        "rnix-lsp": "rnix-lsp",
         "systems": "systems_2"
       }
     },
@@ -2314,21 +2256,6 @@
         "repo": "default",
         "type": "github"
       }
-    },
-    "utils": {
-      "locked": {
-        "lastModified": 1656928814,
-        "narHash": "sha256-RIFfgBuKz6Hp89yRr7+NR5tzIAbn52h8vT6vXkYjZoM=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "7e2a3b3dfd9af950a856d66b0a7d01e3c18aa249",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
     }
   },
   "root": "root",

flake.nix

@@ -89,7 +89,6 @@
     };
 
     # Language servers (use master instead of nixpkgs)
-    rnix-lsp.url = "github:nix-community/rnix-lsp";
     nil = {
       url = "github:oxalica/nil";
       inputs.nixpkgs.follows = "nixpkgs";

flake/legacyPackages.nix

@@ -8,8 +8,10 @@
       inherit system;
       overlays = [
         inputs.self.overlays.default
+
         (_: _: {
-          rnix-lsp = inputs'.rnix-lsp.defaultPackage;
+          # Build nil from source to get most recent
+          # features as they are added.
           nil = inputs'.nil.packages.default;
         })
       ];

modules/plugins/languages/nix.nix

@@ -26,22 +26,6 @@
     then expToLua package
     else ''{"${package}/bin/${defaultCmd}"}'';
   servers = {
-    rnix = {
-      package = pkgs.rnix-lsp;
-      internalFormatter = cfg.format.type == "nixpkgs-fmt";
-      lspConfig = ''
-        lspconfig.rnix.setup{
-          capabilities = capabilities,
-        ${
-          if (cfg.format.enable && cfg.format.type == "nixpkgs-fmt")
-          then useFormat
-          else noFormat
-        },
-          cmd = ${packageToCmd cfg.lsp.package "rnix-lsp"},
-        }
-      '';
-    };
-
     nil = {
       package = pkgs.nil;
       internalFormatter = true;
@@ -165,6 +149,7 @@ in {
         type = enum (attrNames formats);
         default = defaultFormat;
       };
+
       package = mkOption {
         description = "Nix formatter package";
         type = package;
@@ -188,7 +173,18 @@ in {
       assertions = [
         {
           assertion = cfg.format.type != "nixpkgs-fmt";
-          message = "nixpkgs-fmt has been archived upstream. Please use one of the following instead: ${concatStringsSep ", " (attrNames formats)}";
+          message = ''
+            nixpkgs-fmt has been archived upstream. Please use one of the following available formatters:
+            ${concatStringsSep ", " (attrNames formats)}
+          '';
+        }
+
+        {
+          assertion = cfg.lsp.server != "rnix";
+          message = ''
+            rnix-lsp has been archived upstream. Please use one of the following available language servers:
+            ${concatStringsSep ", " (attrNames servers)}
+          '';
         }
       ];
       vim.pluginRC.nix = ''