Re: Two pkcsrc installations in parallel?

[Jason Bacon <outpaddling%yahoo.com@localhost>]

On 2019-04-25 14:49, Benny Siegert wrote:
> Totally possible, as long as you choose two different prefixes and DB 
> directories. You use the bootstrap script to set up the second 
> instance and build using Blake from the correct directory instead of make.
"Blake" -> "bmake"?

To elaborate on what I noted before, it's important that you do not 
accidentally run the wrong bmake (or make), since it has the pkgsrc 
prefix built-in at bootstrap time.

E.g. If you have two bootstrapped trees with the following source, 
install, and sys prefixes:

1. /pkgsrc-1, /pkg-1, /pkg-1/var
2. /pkgsrc-2, /pkg-2, /pkg-2/var

do not run "/pkg-1/bin/bmake" from within "/pkgsrc-2/lang/gcc7". Doing 
so will update the wrong package db.?? Be sure to run "bmake" rather than 
"make" and that the correct "bmake" is first in your PATH.

The auto-pkgsrc-setup script prevents the latter mistake by moving bmake 
to bmake.bin and installing a wrapper script in its place:

#!/bin/sh -e

if ! pwd | fgrep -q /sharedapps/pkgsrc-2019Q1; then
?????? cat << EOM

?????? ?????? ?????? ?????? ===== Error =====

You are running $(which bmake) from the wrong directory.
It should only be used from within /sharedapps/pkgsrc-2019Q1.
Load the correct environment module so that you are using the appropriate
bmake for $(pwd) or go to /sharedapps/pkgsrc-2019Q1.

EOM
?????? exit 1
fi

# Make sure software installed is world-readable on systems with tighter
# default umask.
umask 022
bmake.bin "$@"

This check is not perfect and it would be better to add such a check 
inside bmake since the wrapper script could get clobbered by a package 
upgrade, but I haven't had time to explore this.