Add host-configurable LSP server

package.nix

@@ -24,7 +24,7 @@ let
 in
 rustPlatform.buildRustPackage {
   pname = "decodal";
-  version = "0.1.1";
+  version = "0.1.2";
 
   src = lib.cleanSourceWith {
     src = srcRoot;
@@ -38,6 +38,8 @@ rustPlatform.buildRustPackage {
   cargoBuildFlags = [
     "-p"
     "decodal-cli"
+    "-p"
+    "decodal-lsp"
   ];
 
   doInstallCheck = true;
@@ -45,6 +47,7 @@ rustPlatform.buildRustPackage {
     runHook preInstallCheck
 
     test -x "$out/bin/decodal"
+    test -x "$out/bin/decodal-lsp"
     "$out/bin/decodal" >/dev/null
 
     runHook postInstallCheck