Install icu4c version 63 with Homebrew

homebrew, icu4c, postgresql

Solution

Solution:

- `cd` to Homebrew's formula directory

- Intel

cd $(brew --prefix)/Homebrew/Library/Taps/homebrew/homebrew-core/Formula

- M1

cd $(brew --prefix)/Library/Taps/homebrew/homebrew-core/Formula

- Find desired commit (version 63 for `icu4c`) to checkout

git log --follow icu4c.rb

- Checkout to a new branch

git checkout -b icu4c-63 e7f0f10dc63b1dc1061d475f1a61d01b70ef2cb7

- Reinstall the library with the new version

brew reinstall ./icu4c.rb

- Switch to the reinstalled version

brew switch icu4c 63.1

- Checkout back to master

git checkout master

Sources:

- Homebrew install specific version of formula?

- http://hanxue-it.blogspot.com/2018/08/macos-homebrew-installing-older-version-of-software.html

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
}

Problem

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.

Original source

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