Theming System

.github/workflows/build.yml

@@ -27,6 +27,30 @@ jobs:
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
         skipPush: true
 
+    - name: Prepare /usr/share/wallpaper and update flake.lock hash/timestamp
+      run: |
+        sudo mkdir -p /usr/share/wallpaper
+        echo "dummy" | sudo tee /usr/share/wallpaper/dummy.jpg
+        HASH=$(nix hash path /usr/share/wallpaper)
+        NOW=$(stat -c %Y /usr/share/wallpaper)
+        echo "Updating wallpapers block: lastModified=$NOW, narHash=$HASH"
+
+        # Extract wallpapers block
+        sed -n '/"wallpapers": {/,/^    },$/p' flake.lock > wallpapers_block.tmp
+
+        # Update hash and timestamp
+        sed -i '0,/"lastModified": [0-9]\+,/{s|"lastModified": [0-9]\+,|"lastModified": '"$NOW"',|}' wallpapers_block.tmp
+        sed -i 's|"narHash": "[^"]*"|"narHash": "'"$HASH"'"|' wallpapers_block.tmp
+
+        # Replace the block in flake.lock
+        START=$(grep -n '"wallpapers": {' flake.lock | cut -d: -f1)
+        END=$(awk -v start="$START" 'NR > start && /^    },/ {print NR; exit}' flake.lock)
+        head -n $((START-1)) flake.lock > flake.lock.new
+        cat wallpapers_block.tmp >> flake.lock.new
+        tail -n +$((END+1)) flake.lock >> flake.lock.new
+        mv flake.lock.new flake.lock
+        rm wallpapers_block.tmp
+
     - name: Check flake
       run: nix flake check --verbose
 
@@ -54,6 +78,30 @@ jobs:
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
         skipPush: true
 
+    - name: Prepare /usr/share/wallpaper and update flake.lock hash/timestamp
+      run: |
+        sudo mkdir -p /usr/share/wallpaper
+        echo "dummy" | sudo tee /usr/share/wallpaper/dummy.jpg
+        HASH=$(nix hash path /usr/share/wallpaper)
+        NOW=$(stat -c %Y /usr/share/wallpaper)
+        echo "Updating wallpapers block: lastModified=$NOW, narHash=$HASH"
+
+        # Extract wallpapers block
+        sed -n '/"wallpapers": {/,/^    },$/p' flake.lock > wallpapers_block.tmp
+
+        # Update hash and timestamp
+        sed -i '0,/"lastModified": [0-9]\+,/{s|"lastModified": [0-9]\+,|"lastModified": '"$NOW"',|}' wallpapers_block.tmp
+        sed -i 's|"narHash": "[^"]*"|"narHash": "'"$HASH"'"|' wallpapers_block.tmp
+
+        # Replace the block in flake.lock
+        START=$(grep -n '"wallpapers": {' flake.lock | cut -d: -f1)
+        END=$(awk -v start="$START" 'NR > start && /^    },/ {print NR; exit}' flake.lock)
+        head -n $((START-1)) flake.lock > flake.lock.new
+        cat wallpapers_block.tmp >> flake.lock.new
+        tail -n +$((END+1)) flake.lock >> flake.lock.new
+        mv flake.lock.new flake.lock
+        rm wallpapers_block.tmp
+
     - name: Evaluate NixOS configuration for ${{ matrix.host }}
       run: |
         echo "� Evaluating NixOS configuration..."

.github/workflows/test.yml

@@ -20,6 +20,29 @@ jobs:
           experimental-features = nix-command flakes
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
+    - name: Prepare /usr/share/wallpaper and update flake.lock hash/timestamp
+      run: |
+        sudo mkdir -p /usr/share/wallpaper
+        echo "dummy" | sudo tee /usr/share/wallpaper/dummy.jpg
+        HASH=$(nix hash path /usr/share/wallpaper)
+        NOW=$(stat -c %Y /usr/share/wallpaper)
+        echo "Updating wallpapers block: lastModified=$NOW, narHash=$HASH"
+
+        # Extract wallpapers block
+        sed -n '/"wallpapers": {/,/^    },$/p' flake.lock > wallpapers_block.tmp
+
+        # Update hash and timestamp
+        sed -i '0,/"lastModified": [0-9]\+,/{s|"lastModified": [0-9]\+,|"lastModified": '"$NOW"',|}' wallpapers_block.tmp
+        sed -i 's|"narHash": "[^"]*"|"narHash": "'"$HASH"'"|' wallpapers_block.tmp
+
+        # Replace the block in flake.lock
+        START=$(grep -n '"wallpapers": {' flake.lock | cut -d: -f1)
+        END=$(awk -v start="$START" 'NR > start && /^    },/ {print NR; exit}' flake.lock)
+        head -n $((START-1)) flake.lock > flake.lock.new
+        cat wallpapers_block.tmp >> flake.lock.new
+        tail -n +$((END+1)) flake.lock >> flake.lock.new
+        mv flake.lock.new flake.lock
+        rm wallpapers_block.tmp
     - name: Check flake syntax
       run: nix flake check --verbose
 
@@ -56,6 +79,30 @@ jobs:
           experimental-features = nix-command flakes
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
 
+    - name: Prepare /usr/share/wallpaper and update flake.lock hash/timestamp
+      run: |
+        sudo mkdir -p /usr/share/wallpaper
+        echo "dummy" | sudo tee /usr/share/wallpaper/dummy.jpg
+        HASH=$(nix hash path /usr/share/wallpaper)
+        NOW=$(stat -c %Y /usr/share/wallpaper)
+        echo "Updating wallpapers block: lastModified=$NOW, narHash=$HASH"
+
+        # Extract wallpapers block
+        sed -n '/"wallpapers": {/,/^    },$/p' flake.lock > wallpapers_block.tmp
+
+        # Update hash and timestamp
+        sed -i '0,/"lastModified": [0-9]\+,/{s|"lastModified": [0-9]\+,|"lastModified": '"$NOW"',|}' wallpapers_block.tmp
+        sed -i 's|"narHash": "[^"]*"|"narHash": "'"$HASH"'"|' wallpapers_block.tmp
+
+        # Replace the block in flake.lock
+        START=$(grep -n '"wallpapers": {' flake.lock | cut -d: -f1)
+        END=$(awk -v start="$START" 'NR > start && /^    },/ {print NR; exit}' flake.lock)
+        head -n $((START-1)) flake.lock > flake.lock.new
+        cat wallpapers_block.tmp >> flake.lock.new
+        tail -n +$((END+1)) flake.lock >> flake.lock.new
+        mv flake.lock.new flake.lock
+        rm wallpapers_block.tmp
+
     - name: Dry build NixOS configuration
       run: |
         nix build .#nixosConfigurations.centaur.config.system.build.toplevel \

README.md

@@ -17,6 +17,7 @@ This repository contains a complete NixOS configuration featuring:
 ### Prerequisites
 - NixOS installed with flakes enabled
 - Git for cloning this repository
+- Ensure `/usr/share/wallpaper/` exists and contains all wallpapers you want to use for theming
 
 ### Installation
 
@@ -37,6 +38,9 @@ chmod +x deploy.sh
 ./deploy.sh -up
 ```
 
+### Changing Theme
+To change the active theme, edit `flake.nix` and set `activeTheme` to your desired theme (e.g., `themes.mytheme`).
+
 ## Architecture
 
 ### Flake Structure
@@ -127,6 +131,23 @@ sudo nix-store --optimize
 
 ## Customization
 
+### Adding New Designs (Themes)
+
+To add a new theme:
+1. Add your color scheme YAML file to `modules/nixos/themes/` (e.g., `mytheme.yaml`).
+2. Add your wallpaper image to `/usr/share/wallpaper/` (e.g., `mytheme.jpg`).
+3. Edit `modules/nixos/themes/defaults.nix` to include your new theme:
+   ```nix
+   mytheme = {
+     colorScheme = ./mytheme.yaml;
+     wallpaper = "mytheme.jpg";
+   };
+   ```
+
+### Changing Theme
+
+To change the active theme, edit `flake.nix` and set `activeTheme` to your desired theme (e.g., `themes.mytheme`).
+
 ### Adding New Modules
 
 1. Create module file in appropriate directory: