postgresqlhomebrewicu4c

Install icu4c version 63 with Homebrew

I was trying to start psql but got

psql: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

When I used postgres -D /usr/local/var/postgres, got the following error:

dyld: Library not loaded: /usr/local/opt/icu4c/lib/libicui18n.63.dylib
  Referenced from: /usr/local/bin/postgres
  Reason: image not found
[1]    2559 abort      postgres -D /usr/local/var/postgres

A quick search on libicui18n.63.dylib showed me I need icu4c lib with version 63. However brew list icu4c says I have the version 64.2.

I tried both brew install icu4c 63 & brew install icu4c@63 but no luck.

Can anyone help, please? Thanks in advance.

Solution

  • Solution:

    1. cd to Homebrew's formula directory
    1. Find desired commit (version 63 for icu4c) to checkout
    git log --follow icu4c.rb
    1. Checkout to a new branch
    git checkout -b icu4c-63 e7f0f10dc63b1dc1061d475f1a61d01b70ef2cb7
    1. Reinstall the library with the new version
    brew reinstall ./icu4c.rb
    1. Switch to the reinstalled version
    brew switch icu4c 63.1
    1. Checkout back to master
    git checkout master

    Sources:

    Bonus for those who ended up using this more than once:

    # zsh
function hiicu63() {
  local last_dir=$(pwd)

  cd $(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core/Formula
  git checkout icu4c-63
  brew reinstall ./icu4c.rb
  brew switch icu4c 63.1
  git checkout master

  cd $last_dir
}