requirements: check Xcode version is a string.

Fixes #34822.
brew-doctor: warning the external commands with conflicting names

Closes #34755.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
irssi: restore perl

Replaces perl functionality; adds fix to avoid picking up perl
destinations outside of Homebrew's prefix if a user has set PERL_MM_OPT
like CPAN suggests.

Discussion in #34685; resolves #34770; partially reverts ca09a39 from
irssi: reset sysconfdir to etc

Keep sysconfdir set to etc to avoid losing existing user configuration. sysconfdir was changed in ca09a39.

Closes #34818.
irssi: update 0.8.17_2 bottle.
freetype 2.5.4

Closes #34825.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
freetype: update 2.5.4 bottle.
Formula for queequeg small grammar checker

Closes #34819.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
queequeg: add 0.91 bottle.
queequeg: general cleanup.
New formula: tippecanoe, a tool for map data processing

This adds a new formula for Eric Fischer's tippecanoe project.
The project depends on protocol buffers and sqlite, takes
GeoJSON as input and produces MBTiles as output.

Closes #34423.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
tippecanoe: add 1.0.2 bottle.
tippecanoe: cleanup test.
Remove type checks
osquery 1.2.1

Closes #34809.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
osquery: update 1.2.1 bottle.
unbound: specify path to openssl

Fixes #34827.
Stop returning a path from CurlDownloadStrategy#fetch

Download strategies do not consistently return a value from `fetch`, so
our code calls `cached_location` to get the path instead.
glm: fix head

Closes #34832.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
Prefer cached_location method over @clone ivar