diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 804f16bf0..cbc764baa 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -10,6 +10,11 @@ jobs:
         uses: cachix/install-nix-action@v24
         with:
           nix_path: nixpkgs=channel:nixos-unstable
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
       - name: Check Zig cache hash
         run: nix develop -c ./nix/build-support/check-zig-cache-hash.sh
 #
diff --git a/.github/workflows/release-tip.yml b/.github/workflows/release-tip.yml
index 590fd8a5a..23bc2431d 100644
--- a/.github/workflows/release-tip.yml
+++ b/.github/workflows/release-tip.yml
@@ -48,6 +48,12 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
+
       # Setup Sparkle
       - name: Setup Sparkle
         env:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1d0ea907e..700e73c16 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -31,11 +31,41 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
+
       # Cross-compile the binary. We always use static building for this
       # because its the only way to access the headers.
       - name: Test Build
         run: nix develop -c zig build -Dstatic=true -Dapp-runtime=glfw -Dtarget=${{ matrix.target }}
 
+  build-nix:
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    needs: test
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      # Install Nix and use that to run our tests so our environment matches exactly.
+      - uses: cachix/install-nix-action@v24
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
+
+      - name: Test NixOS package build
+        run: nix build .#ghostty
+
   build-macos:
     runs-on: ghcr.io/cirruslabs/macos-ventura-xcode:latest
     needs: test
@@ -51,6 +81,12 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
+
       # GhosttyKit is the framework that is built from Zig for our native
       # Mac app to access.
       - name: Build GhosttyKit
@@ -61,6 +97,7 @@ jobs:
       # Nix breaks xcodebuild so this has to be run outside.
       - name: Build Ghostty.app
         run: cd macos && xcodebuild
+
   build-windows:
     runs-on: windows-2019
     # this will not stop other jobs from running
@@ -126,6 +163,12 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
 
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
+
       - name: test
         run: nix develop -c zig build -Dapp-runtime=none test
 
@@ -145,6 +188,11 @@ jobs:
       - uses: cachix/install-nix-action@v24
         with:
           nix_path: nixpkgs=channel:nixos-unstable
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
       - name: prettier check
         run: nix develop -c prettier --check .
 
@@ -155,5 +203,10 @@ jobs:
       - uses: cachix/install-nix-action@v24
         with:
           nix_path: nixpkgs=channel:nixos-unstable
+      # Use cache to minimize build times.
+      - name: Setup Nix cache
+        uses: DeterminateSystems/magic-nix-cache-action@main
+        with:
+          diagnostic-endpoint: "" # disable telemetry
       - name: alejandra check
         run: nix develop -c alejandra --check .
diff --git a/nix/package.nix b/nix/package.nix
index fccb0a143..2dc69543c 100644
--- a/nix/package.nix
+++ b/nix/package.nix
@@ -138,11 +138,17 @@ in
         else "$out/share/terminfo"
       }
 
-      mkdir -p $terminfo/share
-      cp -r "$terminfo_src" $terminfo/share/terminfo
+      mkdir -p "$out/nix-support"
 
-      mkdir -p $shell_integration
-      cp -r $out/share/shell-integration $shell_integration/shell-integration
+      mkdir -p "$terminfo/share"
+      mv "$terminfo_src" "$terminfo/share/terminfo"
+      ln -sf "$terminfo/share/terminfo" "$terminfo_src"
+      echo "$terminfo" >> "$out/nix-support/propagated-user-env-packages"
+
+      mkdir -p "$shell_integration"
+      mv "$out/share/ghostty/shell-integration" "$shell_integration/shell-integration"
+      ln -sf "$shell_integration/shell-integration" "$out/share/ghostty/shell-integration"
+      echo "$shell_integration" >> "$out/nix-support/propagated-user-env-packages"
     '';
 
     meta = with lib; {