[build] Simplify recipe parsing and environment creation significantly and...

[build] Simplify recipe parsing and environment creation significantly and fixes multiple environment creation issues; Closes #70
2 jobs for issue-70 in 23 minutes and 3 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #240011
docker
build_linux

00:20:42

4.0%
passed #240012
intel macos
build_macos_intel

00:23:03

4.0%