feat: ✨ add pacman hooks and update install script

install.fish

@@ -1,6 +1,6 @@
 #!/bin/fish
-cp ./pacman/snap-pac-uki-create.fish /usr/local/bin
+cp ./src/snap-pac-uki.fish /usr/local/bin/snap-pac-uki
 echo "installed creation script."
 
-cp ./pacman/hooks/* /usr/share/libalpm/hooks/
+cp ./pacman/* /usr/share/libalpm/hooks/
 echo "installed pacman hooks."

pacman/01_snap-pac-uki_pre.hook

@@ -0,0 +1,12 @@
+[Trigger]
+Operation = Upgrade
+Operation = Install
+Operation = Remove
+Type = Package
+Target = *
+
+[Action]
+Description = Performing pre UKI creation...
+When = PreTransaction
+Exec = /usr/local/bin/snap-pac-uki snapshots
+AbortOnFail

pacman/zzy_snap-pac-uki_post.hook

@@ -0,0 +1,11 @@
+[Trigger]
+Operation = Upgrade
+Operation = Install
+Operation = Remove
+Type = Package
+Target = *
+
+[Action]
+Description = Performing post UKI creation...
+When = PostTransaction
+Exec = /usr/local/bin/snap-pac-uki snapshots

pacman/zzz_snap-pac-uki_current.hook

@@ -0,0 +1,11 @@
+[Trigger]
+Operation = Upgrade
+Operation = Install
+Operation = Remove
+Type = Package
+Target = *
+
+[Action]
+Description = Performing post UKI creation...
+When = PostTransaction
+Exec = /usr/local/bin/snap-pac-uki current

src/snap-pac-uki.fish

@@ -70,13 +70,7 @@ function create_uki -d "creates a new uki" -a variant id
         --add-section .splash="$prefix/usr/share/systemd/bootctl/splash-arch.bmp" --change-section-vma .splash=0x40000 \
         --add-section .linux="$prefix/boot/vmlinuz-linux" --change-section-vma .linux=0x2000000 \
         --add-section .initrd="$prefix/boot/initramfs-linux$fallback.img" --change-section-vma .initrd=0x3000000 \
-        "$prefix/usr/lib/systemd/boot/efi/linuxx64.efi.stub" "$bp/arch-linux$fallback$snid.efi"
+        "$prefix/usr/lib/systemd/boot/efi/linuxx64.efi.stub" "$bd/arch-linux$fallback$snid.efi"
-end
-
-function add_efi_entry -d "adds an efi boot entry for a snapshot uki" -a id
-    efibootmgr -q -C -d $CFG_EFI_DEV -p $CFG_EFI_PART \
-        -l "$EFI_PATH\arch-linux-$id.efi" \
-        -L "Arch Linux (Snapshot $id)"
 end
 
 function create_snapshot_uki -d "creates an uki for a snapshot" -a id
@@ -87,16 +81,43 @@ function create_snapshot_uki -d "creates an uki for a snapshot" -a id
     else if test -d $bd
         rm -rf "$bd/*"
     else
-        mkdir $bd
+        mkdir -p $bd
     end
 
     # prepare files
-    sed "s/BUILD_ID=.*/BUILD_ID=\"snapshot $id\"/;s/PRETTY_NAME=\"\(.*\)\"/PRETTY_NAME=\"\1 (Snapshot $id)\"" <"$CFG_SNAPSHOT_PATH/$id/snapshot/usr/lib/os-release" >"$bd/os-release"
+    sed "s/BUILD_ID=.*/BUILD_ID=\"snapshot $id\"/;s/PRETTY_NAME=\"\(.*\)\"/PRETTY_NAME=\"\1 (Snapshot $id)\"/" <"$CFG_SNAPSHOT_PATH/$id/snapshot/usr/lib/os-release" >"$bd/os-release"
-    sed "s/SNAPSHOT/$CFG_SNAPSHOT_SUBVOL/" <"$CFG_SNAPSHOT_PATH/$id/snapshot/etc/snap-pac-uki/kernel-cmd" >"$bd/kernel-cmd"
+    sed "s/SNAPSHOT/$CFG_SNAPSHOT_SUBVOL\/$id\/snapshot/" <"$CFG_SNAPSHOT_PATH/$id/snapshot/etc/snap-pac-uki/kernel-cmd" >"$bd/kernel-cmd"
 
     # create uki
     create_uki snapshot $id
-    add_efi_entry $id
+end
+
+function create_current_uki -d "creates an uki for the current system"
+    # create build directory
+    set bd "$CFG_BUILD_DIR/current"
+    if test -f $bd
+        error "build dir for snapshot $id is a file"
+    else if test -d $bd
+        rm -rf "$bd/*"
+    else
+        mkdir -p $bd
+    end
+
+    # create default
+    cp "/usr/lib/os-release" "$bd/os-release"
+    sed "s/SNAPSHOT/$CFG_DEFAULT_SUBVOL/" <"/etc/snap-pac-uki/kernel-cmd" >"$bd/kernel-cmd"
+    create_uki rolling
+
+    # create fallbac
+    sed "s/BUILD_ID=.*/BUILD_ID=fallback/;s/PRETTY_NAME=\"\(.*\)\"/PRETTY_NAME=\"\1 (Fallback)\"/" <"/usr/lib/os-release" >"$bd/os-release-fallback"
+    sed "s/SNAPSHOT/$CFG_DEFAULT_SUBVOL/" <"/etc/snap-pac-uki/kernel-cmd-fallback" >"$bd/kernel-cmd-fallback"
+    create_uki fallback
+end
+
+function add_efi_entry -d "adds an efi boot entry for a snapshot uki" -a id
+    efibootmgr -q -C -d $CFG_EFI_DEV -p $CFG_EFI_PART \
+        -l "$CFG_EFI_PATH\arch-linux-$id.efi" \
+        -L "Arch Linux (Snapshot $id)"
 end
 
 function main
@@ -108,9 +129,28 @@ function main
         case "snapshots"
             find_tasks
             for id in $TASK_UKI
+                echo "==> found snapshot without uki: $id"
+
                 create_snapshot_uki $id
+                echo "  -> created uki for snapshot $id"
+
+                cp "$CFG_BUILD_DIR/$id/arch-linux-$id.efi" "$CFG_UKI_DIR"
+                echo "  -> copied uki for snapshot $id into uki directory"
+
+                add_efi_entry $id
+                echo "  -> created efi boot entry for uki of snapshot $id"
             end
 
+        case "current"
+            echo "==> creating current ukis"
+
+            create_current_uki
+            echo "  -> created ukis"
+
+            cp "$CFG_BUILD_DIR/current/arch-linux.efi" "$CFG_UKI_DIR"
+            cp "$CFG_BUILD_DIR/current/arch-linux-fallback.efi" "$CFG_UKI_DIR"
+            echo "  -> copied ukis into uki directory"
+
         case "*"
             error "unknown command"
     end