3dbb735f3c
This commit solves an issue where the environment handed to
`/usr/sbin/installer` is not the same as the environment used by the
graphical PKG installer.
This is evident in some post-install scripts, e. g. the
`component-10.pkg/Scripts/postinstall` script in the `dymo-label`
cask. The code says:
```
USER_ID=`id -u ${USER}`
launchctl bootstrap gui/$USER_ID /Library/LaunchAgents/com.dymo.dls.webservice.plist
```
The graphical installer will export e. g. `USER=alice`, and
everything works as intended.
However, `brew cask install` does not override `sudo`’s default,
which is `USER=ROOT`. This violates the assumptions in the script.
This commit fixes the issue by configuring `sudo` to override the
following environment variables with the proper user name:
- `LOGNAME`
- `USER`
- `USERNAME`
Library
This directory contains all the code run by the official brew and brew cask commands in Homebrew and all formulae (package descriptions) in taps (repositories containing formulae) in Taps subdirectories.