prolog lsp_server: init

Author: baileylu121

README.md

@@ -222,7 +222,7 @@ functions.
 <!-- `> bash ./supported-programs.sh` -->
 
 <!-- BEGIN mdsh -->
-`treefmt-nix` currently supports 125 formatters:
+`treefmt-nix` currently supports 126 formatters:
 
 * [actionlint](programs/actionlint.nix)
 * [aiken](programs/aiken.nix)
@@ -312,6 +312,7 @@ functions.
 * [php-cs-fixer](programs/php-cs-fixer.nix)
 * [pinact](programs/pinact.nix)
 * [prettier](programs/prettier.nix)
+* [prolog-lsp-server](programs/prolog-lsp-server.nix)
 * [protolint](programs/protolint.nix)
 * [qmlformat](programs/qmlformat.nix)
 * [rstfmt](programs/rstfmt.nix)

examples/formatter-prolog-lsp-server.toml

@@ -0,0 +1,6 @@
+# Example generated by ../examples.sh
+[formatter.prolog-lsp-server]
+command = "prolog-lsp-server"
+excludes = []
+includes = ["*.pl", "*.pro"]
+options = []

programs/prolog-lsp-server.nix

@@ -0,0 +1,50 @@
+{
+  mkFormatterModule,
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.programs.prolog-lsp-server;
+
+  lsp-server = pkgs.fetchzip {
+    name = "lsp_server";
+    url = "https://github.com/jamesnvc/lsp_server/archive/v3.14.0.zip";
+    sha256 = "sha256-TKJxGcz170nit1kdUXQKZi5C5jq+MsW3w5FSqTfxqow=";
+  };
+
+  swiplWithFormatter = cfg.package.override {
+    extraPacks = map (dep-path: "'file://${dep-path}'") [
+      lsp-server
+    ];
+  };
+in
+{
+  meta.maintainers = [ lib.maintainers.baileylu ];
+
+  imports = [
+    (mkFormatterModule {
+      name = "prolog-lsp-server";
+      package = "swi-prolog";
+      includes = [
+        "*.pl"
+        "*.pro"
+      ];
+    })
+  ];
+
+  config = lib.mkIf cfg.enable {
+    settings.formatter.prolog-lsp-server = {
+      # lsp_server doesn't support multiple file targets
+      command = pkgs.writeShellApplication {
+        name = "prolog-lsp-server";
+        text = ''
+          for file in "$@"; do
+            ${lib.getExe swiplWithFormatter} formatter "$file"
+          done
+        '';
+      };
+    };
+  };
+}