Claudia Pellegrino claui

Fixing `bundle install` on macOS if it fails with `cannot load such file -- rubygems/format (LoadError)`

On macOS, chances are that bundle install … fails with the following error:

/Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': cannot load such file -- rubygems/format (LoadError)
       /Library/Ruby/Site/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
       /Library/Ruby/Gems/2.0.0/gems/bundler-1.2.3/lib/bundler/source.rb:5:in `<top (required)>'
       /Library/Ruby/Gems/2.0.0/gems/bundler-1.2.3/lib/bundler/dsl.rb:21:in `initialize'
 /Library/Ruby/Gems/2.0.0/gems/bundler-1.2.3/lib/bundler/dsl.rb:6:in `new'

Keybase proof

I hereby claim:

I am claui on github.
I am claudi (https://keybase.io/claudi) on keybase.
I have a public key ASDIMlkjQa0MVxXN1uF2VuocWhTp3IAo-bnwjVRtuU6SPwo

To claim this, I am signing this object:

Update: SOLVED

Thanks to @indirect’s help, I’m back up and running. Turns out there’s that directory /Library/Ruby/Gems/2.6.0/specifications/default. It contains a couple of gemspecs you really can’t (and shouldn’t ever) delete.

With the default gemspecs back in place, I was able to apply the fiddle hack mentioned below, and got Homebrew working again.

Original issue

I’ve had success using Homebrew in a multi-user environment the following way:

Create a shared Homebrew user

Create a new (non-GUI) user, group and home directory:

sudo /usr/sbin/sysadminctl -addUser brew \
  -fullName 'Homebrew' -admin -home /var/brew \
  -password - -UID 430 \

	#!/bin/bash
	set -eu;

	echo >&2 'Quitting Airmail 3'
	osascript -e 'tell app "Airmail 3" to quit'

	echo >&2 'Quitting Airmail Beta'
	osascript -e 'tell app "Airmail Beta" to quit'

	echo >&2 'Asserting that Airmail Beta data is available'

	# Copy and paste the following snippet, including brackets, into the Terminal
	(
	set -e;

	cd "$(mktemp -d)"
	curl -LO 'http://www.newosxbook.com/tools/jtool2.tgz'
	tar -x -f jtool2.tgz
	lipo jtool2 -thin x86_64 -output jtool2.x86_64
	lipo disarm -thin x86_64 -output disarm.x86_64
	sudo mkdir -p /usr/local/bin

	$ brew reinstall gettext
	[…]
	$ gettext --version
	Killed: 9
	$ replace_inode() {
	local filename
	for filename; do
	chmod o+w "${filename}"
	rm -f "${filename}.bak"
	mv -f "${filename}" "${filename}.bak"

	<?xml version="1.0" encoding="utf-8"?>
	<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
	<ShortName>AUR</ShortName>
	<LongName>Arch User Repository</LongName>
	<Description/>
	<InputEncoding>UTF-8</InputEncoding>
	<Image height="16" width="16" type="image/x-icon">https://www.archlinux.org/static/favicon.29302f683ff8.ico</Image>
	<Image height="64" width="64" type="image/png">https://www.archlinux.org/static/logos/icon-transparent-64x64.9ed71ce9197d.png</Image>
	<Url type="text/html" template="https://aur.archlinux.org/packages/">
	<Param name="O" value="0"/>

	Homebrew build logs for x264 on macOS 11.0
	Build date: 2020-07-01 07:39:34