1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/tools/language-servers/crystalline/default.nix b/nixpkgs/pkgs/development/tools/language-servers/crystalline/default.nix
index 67ecfdcb7fb8..7e0bc27faceb 100644
--- a/nixpkgs/pkgs/development/tools/language-servers/crystalline/default.nix
+++ b/nixpkgs/pkgs/development/tools/language-servers/crystalline/default.nix
@@ -41,6 +41,7 @@ crystal.buildCrystalPackage {
 
   meta = with lib; {
     description = "A Language Server Protocol implementation for Crystal";
+    mainProgram = "crystalline";
     homepage = "https://github.com/elbywan/crystalline";
     license = licenses.mit;
     maintainers = with maintainers; [ donovanglover ];