lexical: update build

flake.nix

@@ -40,7 +40,7 @@
             discord-downloader-go = import ./packages/discord-downloader-go.nix { inherit pkgs lib; };
             fennel-ls = import ./packages/fennel-ls.nix { inherit pkgs lib; };
             headscale-ui = import ./packages/headscale-ui.nix { inherit pkgs lib; };
-            lexical = import ./packages/lexical.nix { inherit system; };
+            lexical = import ./packages/lexical.nix { inherit pkgs lib; };
             neovim-nightly = import ./packages/neovim-nightly.nix { inherit (inputs'.neovim-flake.packages) neovim; inherit pkgs lib; };
             q = import ./packages/q.nix { inherit pkgs lib; };
             redlib = import ./packages/redlib.nix { inherit pkgs lib; };

packages/lexical.nix

@@ -1,3 +1,49 @@
-{ system, ... }:
+{ pkgs, lib }:
 
-(builtins.getFlake "github:lexical-lsp/lexical/aba16bb757822535357a2100db7045b0cae0528a").packages.${system}.default
+let
+  erlang = pkgs.beam.interpreters.erlangR26;
+  beamPackages = pkgs.beam.packagesWith erlang;
+in
+beamPackages.mixRelease rec {
+  pname = "lexical";
+  version = "0.5.2";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "lexical-lsp";
+    repo = "lexical";
+    rev = "v${version}";
+    hash = "sha256-HWqwJ7PAz80bm6YeDG84hLWPE11n06K98GOyeDQWZWU=";
+  };
+
+  mixFodDeps = beamPackages.fetchMixDeps {
+    pname = "mix-deps-${pname}";
+    inherit src version;
+    sha256 = "sha256-oxR56mzV0uRs40j5N+bU1QDMXTYnJ789cUoOG462KtI=";
+  };
+
+  NAMESPACE = "1";
+
+  installPhase = ''
+    runHook preInstall
+
+    mix do compile --no-deps-check, package --path "$out"
+
+    runHook postInstall
+  '';
+
+  preFixup =
+    let
+      activate_version_manager = pkgs.writeScript "activate_version_manager.sh" ''
+        true
+      '';
+    in
+    ''
+      substituteInPlace "$out/bin/start_lexical.sh" --replace 'elixir_command=' 'elixir_command="${beamPackages.elixir}/bin/"'
+      rm "$out/bin/activate_version_manager.sh"
+      ln -s ${activate_version_manager} "$out/bin/activate_version_manager.sh"
+
+      mv "$out/bin" "$out/binsh"
+
+      makeWrapper "$out/binsh/start_lexical.sh" "$out/bin/lexical" --set RELEASE_COOKIE lexical
+    '';
+}