Use an AWK script for modifying the post-install-remove thingy

The patch fails when versions change or (unrelated) packages (dis)appear,
messing up the order of lines in the manifest.

Makefile

@@ -438,6 +438,8 @@ $(call ensure_mount,image_binary_files) $(IMAGE_DIR)/.lipbinaries: image_git_pul
 
 $(call ensure_mount,image_remaster) $(IMAGE_DIR)/.remastered: $(IMAGE_DIR)/.lipbinaries
 	$(call patch_all,$(CURDIR)/patches/iso/,$(IMAGE_DIR))
+	awk -f $(CURDIR)/scripts/casper-remove-needed-packages-from-unistall-manifest.awk $(IMAGE_DIR)/casper/filesystem.manifest-remove > /tmp/fs.manifest
+	mv /tmp/fs.manifest $(IMAGE_DIR)/casper/filesystem.manifest-remove
 	touch "$(IMAGE_DIR)/.remastered"
 
 $(call ensure_mount,image_content): image_git_pull $(IMAGE_DIR)/.remastered $(IMAGE_DIR)$(GRUB_INSTALL_DIR)/lipinfo.cfg $(IMAGE_DIR)$(GRUB_INSTALL_DIR)/.lipgrub

patches/iso/casper-remove-needed-packages-from-unistall-manifest.patch → patches/inactive/iso/casper-remove-needed-packages-from-unistall-manifest.patch

 --- a/casper/filesystem.manifest-remove
 +++ b/casper/filesystem.manifest-remove
-@@ -45,8 +45,6 @@ libfcitx-gclient0:amd64
+@@ -45,7 +45,6 @@ libfcitx-gclient0:amd64
  libfcitx-qt0:amd64
  libfcitx-qt5-1:amd64
  libfcitx-utils0:amd64
--libgeoclue0:amd64
 -libjavascriptcoregtk-4.0-18:amd64
  liblua5.2-0:amd64
  liblvm2app2.2:amd64
@@ -16,7 +15,7 @@
 -libwebkit2gtk-4.0-37:amd64
 -libwebkit2gtk-4.0-37-gtk2:amd64
  linux-signed-generic
--linux-signed-image-4.4.0-18-generic
+-linux-signed-image-4.4.0-9136-generic
  linux-signed-image-generic
  localechooser-data
  lupin-casper

scripts/casper-remove-needed-packages-from-unistall-manifest.awk

+#!/usr/bin/awk
+
+BEGIN {
+	# This is the number of things we're going to remove. Adjust it when changing the regular expression below
+	want = 6;
+	skipped = 0;
+}
+
+function skipit() {
+	skip = 1;
+	skipped += 1;
+	print "removing", $0 >"/dev/stderr"
+}
+
+{ skip = 0; }
+
+/^linux-signed-image-.*-generic/ {
+	skipit()
+}
+
+/^zenity/ {
+	skipit()
+}
+
+/^(lib(javascriptcoregtk|webkit2gtk))/ {
+	skipit()
+}
+
+skip == 0 {
+	print
+}
+
+END {
+	if (want != skipped) {
+		print "I removed ", skipped, " thingies, wanted ", want > "/dev/stderr"
+		exit 1;
+	}
+	exit 0;
+}