caveats: check if plist is a symlink.

Avoid problems like #32367.
gwyddion 2.38

Update formula to gwyddion 2.38

Closes #32422.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
ruby-build 20140919

Closes #32425.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
hevea 2.18
hevea: update 2.18 bottle.

Closes #32426.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
pyqt5 5.3.2

Version bump and patches configure.py to address a build failure.

Fixes #32370, closes #32419.
sip 4.16.3

Closes #32419.
pyqt5: configure verbosely
Revert "hevea: update 2.18 bottle."

This reverts commit 86ff2aa79142a37220d19e51afff63d12fe5b53e.
Revert "hevea 2.18"

This reverts commit cf0cd1edd7d59c0c1ede13b761de899f2c15893f.
Clarify "could not tap" warning

Closes #31451.
Closes #32223.