[ADD] gnupg without its diagrams, and jinja2 for systemd

gnupg builds two architecture diagrams into its manual, one needing ImageMagick
and one transfig -- two toolchains for two pictures. --disable-doc is gnupg own
switch, verified present in configure before use.

The hook was written twice. The first version looked for a ./configure line
ending in a backslash and asserted its way out; gnupg uses an options ARRAY.
Both shapes appear in this port, so a hook has to read the file rather than
assume the house style.

systemd generates source from jinja2 templates and stops without it. Not
documentation this time -- the build cannot proceed.

--- FR ---

gnupg construit deux diagrammes dans son manuel, l un exigeant ImageMagick et
l autre transfig -- deux chaines d outils pour deux images. --disable-doc est son
propre interrupteur, verifie present dans configure avant usage.

Le hook a ete ecrit deux fois. La premiere version cherchait une ligne
./configure terminee par une contre-oblique et s est arretee sur son assertion ;
gnupg emploie un TABLEAU d options. Les deux formes existent dans ce portage : un
hook doit lire le fichier plutot que supposer le style maison.

systemd genere du code depuis des gabarits jinja2 et s arrete sans lui. Pas de la
documentation cette fois -- la construction ne peut pas avancer.

Assisted-by: Claude Opus 5

patches/pkgbuild/gnupg.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# gnupg: no manual, because two diagrams in it need two image toolchains.
+#
+#   /bin/sh: line 1: convert: command not found
+#   make[2]: *** [Makefile:1199: gnupg-module-overview.pdf] Error 127
+#   /bin/sh: line 1: fig2dev: command not found
+#   make[2]: *** [Makefile:1211: gnupg-card-architecture.pdf] Error 127
+#
+# `convert` is ImageMagick, `fig2dev` is transfig. Two separate toolchains, for
+# two architecture diagrams in gnupg's own documentation.
+#
+# --disable-doc is gnupg's own switch, and it was CHECKED before being used:
+# `grep -oE '\-\-(disable|enable)-doc' configure` finds both, so autoconf knows
+# the option. groff had no such switch and needed its generated Makefile edited
+# instead -- the difference matters, because an invented flag draws only a
+# warning from autoconf and the build fails exactly as before, with the hook's
+# own check passing.
+set -euo pipefail
+# AN ARRAY, not a continued command. The first version of this hook looked for a
+# ./configure line ending in a backslash and asserted its way out:
+#
+#   AssertionError: gnupg: ./configure does not continue
+#
+# gnupg collects its options in `local configure_options=( ... )` and then calls
+# `./configure "${configure_options[@]}"`. Both shapes appear in this port --
+# binutils, cryptsetup and libxcrypt use continued commands; gnupg and shadow use
+# arrays -- so a hook has to look at the file rather than assume the house style.
+python3 - <<'ZZPY'
+import io, re
+lines = io.open("PKGBUILD", encoding="utf-8").read().split("\n")
+hit = [i for i, l in enumerate(lines) if re.match(r"^[ \t]*local configure_options=\($", l)]
+assert len(hit) == 1, "gnupg: expected one configure_options array, got %d" % len(hit)
+i = hit[0] + 1
+ind = re.match(r"^[ \t]*", lines[i]).group(0)
+# The array is kept in alphabetical order upstream; --disable-doc sorts first.
+lines.insert(i, ind + "--disable-doc  # no ImageMagick, no transfig for the diagrams")
+io.open("PKGBUILD", "w", encoding="utf-8").write("\n".join(lines))
+ZZPY
+grep -A2 "local configure_options=(" PKGBUILD | grep -q -- "--disable-doc" || {
+    echo "gnupg: the flag is not inside the options array" >&2; exit 1; }
+echo "gnupg: manual disabled (no ImageMagick, no transfig)"

scripts/packages.sh

@@ -279,6 +279,14 @@ STAGE1_PACKAGES=(
     # same reason: its package() would take Debian's dist-packages from the
     # host's python.
     python-setuptools-scm
+    # systemd generates part of its source with jinja2 templates:
+    #
+    #   meson.build:1620:15: ERROR: python3 is missing modules: jinja2
+    #
+    # Not documentation -- the build cannot proceed without it. python-markupsafe
+    # comes with it, as jinja's only dependency.
+    python-markupsafe
+    python-jinja
     # libaio: a real closure gap. lvm2 stops on
     #
     #   device/bcache.c:30:10: fatal error: libaio.h: No such file or directory