diff --git a/pkgs/by-name/gl/glasgow/package.nix b/pkgs/by-name/gl/glasgow/package.nix
index 56133af24a68..a84b81799ce0 100644
--- a/pkgs/by-name/gl/glasgow/package.nix
+++ b/pkgs/by-name/gl/glasgow/package.nix
@@ -99,7 +99,7 @@ python3.pkgs.buildPythonApplication rec {
   makeWrapperArgs = [
     "--set"
     "YOSYS"
-    "${yosys}/bin/yosys"
+    (lib.getExe yosys)
     "--set"
     "ICEPACK"
     "${icestorm}/bin/icepack"
diff --git a/pkgs/by-name/mc/mcy/package.nix b/pkgs/by-name/mc/mcy/package.nix
index e2d6031e9b4e..e54d9a44788e 100644
--- a/pkgs/by-name/mc/mcy/package.nix
+++ b/pkgs/by-name/mc/mcy/package.nix
@@ -26,13 +26,13 @@ stdenv.mkDerivation {
     patchShebangs .
 
     substituteInPlace mcy.py \
-      --replace yosys '${yosys}/bin/yosys' \
+      --replace yosys '${lib.getExe yosys}' \
       --replace 'os.execvp("mcy-dash"' "os.execvp(\"$out/bin/mcy-dash\""
     substituteInPlace mcy-dash.py \
       --replace 'app.run(debug=True)' 'app.run(host="0.0.0.0",debug=True)' \
       --replace 'subprocess.Popen(["mcy"' "subprocess.Popen([\"$out/bin/mcy\""
     substituteInPlace scripts/create_mutated.sh \
-      --replace yosys '${yosys}/bin/yosys'
+      --replace yosys '${lib.getExe yosys}'
   '';
 
   # the build needs a bit of work...
diff --git a/pkgs/by-name/yo/yosys/package.nix b/pkgs/by-name/yo/yosys/package.nix
index 477b3cebdfa4..bd4d637727c6 100644
--- a/pkgs/by-name/yo/yosys/package.nix
+++ b/pkgs/by-name/yo/yosys/package.nix
@@ -196,6 +196,7 @@ stdenv.mkDerivation (finalAttrs: {
     changelog = "https://github.com/YosysHQ/yosys/releases/tag/v${finalAttrs.version}";
     license = lib.licenses.isc;
     platforms = lib.platforms.all;
+    mainProgram = "yosys";
     maintainers = with lib.maintainers; [
       shell
       thoughtpolice