[RFC] Install only necessary dependencies for each build type.

[fwalch]

Don't install unnecessary dependencies (e.g. jq, but not clang or doxygen for vimpatch report) to clean up the scripts and make builds a tiny bit faster.

[justinmk]

Instead of putting a check in each install_/setup_ function, how about wrapping the "setup steps" at this level?

function ci_install() {
  [[ "${CI}" == "true" ]] && return 0 || echo "Local build, not installing dependencies." ; return 1;
}

ci_install && (
  install_clang
  setup_neovim_deps
)

This ci_install (or whatever) function could be put in documentation.sh or common.sh.

[fwalch]

Awesome, thanks! Added a is_ci_build? function.

[fwalch]

Added two small changes in commit_doc. Output is in fwalch/doc, by the way. A build is currently running.

[justinmk]

Nice, let me know when RDY.

[fwalch]

Using ( for enclosing dependency installation didn't work, because exported environment variables were not available later on and dependencies were built instead of using the ones from neovim/deps.
Also changed find_all_bugs_number to use its parameter.

The build passed; I think this is RDY now.

[justinmk]

Good catch!