big module system implementation

.scripts/cleanup-boot.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+
+# Script to clean up old initrd and kernel files in /boot/EFI/nixos
+# Make sure it's added to flake.nix, then run:
+# "nix build .#packages.x86_64-linux.cleanup-boot".
+
+# Number of generations to keep
+KEEP_GENERATIONS=4
+
+# Log file for cleanup actions
+LOG_FILE="/var/log/cleanup-boot.log"
+
+# Dry run flag
+DRY_RUN=false
+
+# Check for dry run argument
+if [ "$1" = "--dry-run" ]; then
+	DRY_RUN=true
+fi
+
+# Function to log messages
+log() {
+	echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | tee -a "$LOG_FILE"
+}
+
+# Exit on any error
+set -e
+
+log "Starting cleanup script. Keeping the latest $KEEP_GENERATIONS generations."
+
+# List the initrd files in /boot/EFI/nixos sorted by modification time (oldest first)
+mapfile -t initrd_files < <(find /boot/EFI/nixos -type f -name '*initrd*.efi' -printf '%T@ %p\n' | sort -n)
+
+# List the kernel files in /boot/EFI/nixos sorted by modification time (oldest first)
+mapfile -t kernel_files < <(find /boot/EFI/nixos -type f -name '*kernel*.efi' -printf '%T@ %p\n' | sort -n)
+
+# Count the number of initrd and kernel files
+initrd_count=${#initrd_files[@]}
+kernel_count=${#kernel_files[@]}
+
+log "Found $initrd_count initrd files and $kernel_count kernel files."
+
+# Initialize arrays to hold files to delete
+delete_initrd_files=()
+delete_kernel_files=()
+
+# If there are fewer than KEEP_GENERATIONS initrd files, don't delete any
+if [ "$initrd_count" -le "$KEEP_GENERATIONS" ]; then
+	log "Fewer than $KEEP_GENERATIONS initrd files found. No initrd files will be deleted."
+else
+	# Get the initrd files to delete
+	delete_initrd_files=("${initrd_files[@]:0:initrd_count-KEEP_GENERATIONS}")
+fi
+
+# If there are fewer than KEEP_GENERATIONS kernel files, don't delete any
+if [ "$kernel_count" -le "$KEEP_GENERATIONS" ]; then
+	log "Fewer than $KEEP_GENERATIONS kernel files found. No kernel files will be deleted."
+else
+	# Get the kernel files to delete
+	delete_kernel_files=("${kernel_files[@]:0:kernel_count-KEEP_GENERATIONS}")
+fi
+
+# Log the files identified for deletion
+log "Files identified for deletion:"
+for file_entry in "${delete_initrd_files[@]}" "${delete_kernel_files[@]}"; do
+	file=$(echo "$file_entry" | cut -d' ' -f2-)
+	log "$file"
+done
+
+# Confirm dry run mode
+if [ "$DRY_RUN" = true ]; then
+	log "Dry run mode enabled. No files will be deleted."
+fi
+
+# Remove old files
+for file_entry in "${delete_initrd_files[@]}" "${delete_kernel_files[@]}"; do
+	file=$(echo "$file_entry" | cut -d' ' -f2-)
+	if [ "$DRY_RUN" = false ]; then
+		if rm -f "$file"; then
+			log "Deleted: $file"
+		else
+			log "Failed to delete: $file"
+		fi
+	else
+		log "Dry run - would delete: $file"
+	fi
+done
+
+log "Cleanup script completed."