diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 345b45f..ea12155 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -10,3 +10,4 @@ jobs:
       - uses: cachix/install-nix-action@v19
       - run: nix build
       - run: nix flake check
+      - run: nix run
diff --git a/build.sh b/build.sh
index 53189bd..ac8adda 100644
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 # Following variables are set via sed in the buildPhase step
 PREFIX=""
 # Intentionally overriding PATH so supressing shellcheck