users-guide: Document how to disable package environments cherry-pick-36d38047
authorBen Gamari <ben@smart-cactus.org>
Sun, 31 Mar 2019 20:22:04 +0000 (20:22 +0000)
committerBen Gamari <ben@well-typed.com>
Fri, 19 Apr 2019 14:26:17 +0000 (10:26 -0400)
commitf83acb7f1d2914ac5a1bdec3f0e5f8201f0260fb
treef27b76e459b5d903bf2980237d9a6b527a305928
parentd44f54aa8f0125f209637fa9e26a8968dbb31d8b
users-guide: Document how to disable package environments

As noted in #16309 this somehow went undocumented.

(cherry picked from commit 36d380475d9056fdf93305985be3def00aaf6cf7)
docs/users_guide/packages.rst