Improve rooting of the conda build env

3 jobs for v1.8.0rc7 in 13 minutes and 19 seconds
latest
Status Job ID Name Coverage
  Build
passed #15640
linux
build-linux

00:09:07

passed #15641
win
build-win

00:11:30

 
  Deploy
passed #15642
conda linux
deploy-stable

00:01:28