workaround(omnix): add shell application to fixup failed string replacements

Signed-off-by: Cameron Smith <cameron.ray.smith@gmail.com>

Author: cameronraysmith

nix/modules/template-rename.nix

@@ -0,0 +1,92 @@
+{
+  inputs,
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+
+{
+  perSystem =
+    { system, pkgs, ... }:
+    {
+      packages.fix-template-names = pkgs.writeShellApplication {
+        name = "fix-template-names";
+        runtimeInputs = with pkgs; [
+          coreutils
+          gnused
+          gnugrep
+          findutils
+          file
+        ];
+        text = ''
+          #!/usr/bin/env bash
+
+          set -euo pipefail
+
+          # Colors for output
+          GREEN='\033[0;32m'
+          YELLOW='\033[1;33m'
+          RED='\033[0;31m'
+          NC='\033[0m' # No Color
+
+          # Default old names
+          OLD_NAME="python-nix-template"
+          OLD_UNDERSCORE="python_nix_template"
+
+          # Get the current directory name as default new name
+          DEFAULT_NEW_NAME=$(basename "$(pwd)")
+          # Convert to underscore version
+          DEFAULT_NEW_UNDERSCORE=$(echo "$DEFAULT_NEW_NAME" | tr '-' '_')
+
+          # Use command line argument if provided, otherwise use defaults
+          if [ $# -eq 1 ]; then
+            NEW_NAME="$1"
+            # Convert to underscore version
+            NEW_UNDERSCORE=$(echo "$NEW_NAME" | tr '-' '_')
+          elif [ $# -eq 0 ]; then
+            NEW_NAME="$DEFAULT_NEW_NAME"
+            NEW_UNDERSCORE="$DEFAULT_NEW_UNDERSCORE"
+          else
+            echo -e "''${RED}Error: Too many arguments.''${NC}"
+            echo "Usage: fix-template-names [new-name]"
+            echo "If no argument is provided, the current directory name ($DEFAULT_NEW_NAME) will be used."
+            exit 1
+          fi
+
+          echo -e "''${YELLOW}Starting replacement of template names...''${NC}"
+          echo -e "''${YELLOW}Replacing $OLD_NAME with $NEW_NAME''${NC}"
+          echo -e "''${YELLOW}Replacing $OLD_UNDERSCORE with $NEW_UNDERSCORE''${NC}"
+
+          # Find all text files in the project (excluding .git, node_modules, and other common directories to ignore)
+          # and replace the strings in-place
+          find . -type f \
+              -not -path "*/\.*" \
+              -not -path "*/node_modules/*" \
+              -not -path "*/venv/*" \
+              -not -path "*/build/*" \
+              -not -path "*/dist/*" \
+              -not -path "*/\__pycache__/*" \
+              -exec grep -l "$OLD_NAME\|$OLD_UNDERSCORE" {} \; | while read -r file; do
+              echo "Processing: $file"
+              
+              # Check if file is binary
+              if file "$file" | grep -q "binary"; then
+                  echo "  Skipping binary file"
+                  continue
+              fi
+              
+              # Make replacements
+              sed -i.bak "s/$OLD_NAME/$NEW_NAME/g" "$file"
+              sed -i.bak "s/$OLD_UNDERSCORE/$NEW_UNDERSCORE/g" "$file"
+              
+              # Remove backup files
+              rm -f "''${file}.bak"
+          done
+
+          echo -e "''${GREEN}Replacement complete!''${NC}"
+          echo -e "''${YELLOW}Note: You may need to rebuild or reinstall your package after these changes.''${NC}"
+        '';
+      };
+    };
+}