diff --git a/.gitea/workflows/test-and-build.yml b/.gitea/workflows/test-and-build.yml
index 725a529..10bdd07 100644
--- a/.gitea/workflows/test-and-build.yml
+++ b/.gitea/workflows/test-and-build.yml
@@ -13,9 +13,9 @@ on:
 jobs:
   test:
     container:
-      image: debian:bookworm-slim
+      image: debian:bullseye-slim
     steps:
-      - name: Install prereqs
+      - name: Install prerequisites
         run: |
           apt-get update && apt-get install -y \
             curl \
@@ -24,43 +24,15 @@ jobs:
             gnupg \
             && rm -rf /var/lib/apt/lists/*
 
-      - name: Install Nix
+      - name: Install Nix with nix install
         run: |
-          curl -L https://nixos.org/nix/install | sh
-          . /root/.nix-profile/etc/profile.d/nix.sh
+          curl -L https://nixos.org/releases/nix/nix-2.15.0/install | sh
+          . /etc/profile.d/nix.sh
 
       - name: Checkout code
         uses: actions/checkout@v3
 
       - name: Enter development shell and run tests
         run: |
-          . /root/.nix-profile/etc/profile.d/nix.sh
+          . /etc/profile.d/nix.sh
           nix develop --command cabal test
-
-  build:
-    container:
-      image: debian:bookworm-slim
-    needs: test
-    steps:
-      - name: Install prereqs
-        run: |
-          apt-get update && apt-get install -y \
-            curl \
-            sudo \
-            xz-utils \
-            gnupg \
-            && rm -rf /var/lib/apt/lists/*
-
-      - name: Install Nix
-        run: |
-          curl -L https://nixos.org/nix/install | sh
-          . /root/.nix-profile/etc/profile.d/nix.sh
-
-      - name: Checkout code
-        uses: actions/checkout@v3
-
-      - name: Build binary
-        run: |
-          . /root/.nix-profile/etc/profile.d/nix.sh
-          nix build
-          ls -l ./result/bin/tricu