xmldiff.0.6.0 requires autoconf
In #24007:
#=== ERROR while compiling xmldiff.0.6.0 ======================================#
# context 2.2.0~alpha~dev | linux/x86_64 | ocaml-base-compiler.4.14.1 | file:///home/opam/opam-repository
# path ~/.opam/4.14/.opam-switch/build/xmldiff.0.6.0
# command ~/.opam/opam-init/hooks/sandbox.sh build make all
# exit-code 2
# env-file ~/.opam/log/xmldiff-7-225602.env
# output-file ~/.opam/log/xmldiff-7-225602.out
### output ###
# autoconf
# make: autoconf: No such file or directory
# make: *** [Makefile:105: configure] Error 127