The wrapper allows me to pick and choose what to install and also to set
some extra environment variables if necessary. A separate wrapper
derivation prevents the hefty rebuild of the entire plan9port derivation
when making changes.
Change-Id: I3f96cc3e31baf3bd37ae419578c5789aa093e578
Reviewed-on: https://cl.tvl.fyi/c/depot/+/13038
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
Autosubmit: sterni <sternenseemann@systemli.org>