Linus Arver listx

Building the Elixir package falood/file_system mac_listener binary in a nix environment

This confused me, so I'm documenting my workaround, which is probably not the correct workaround, but it seemed to work (leaving non-persistent state, lol).

When in a shell with mix and clang provided via nix, the file_system package fails to build the mac_listener binary via clang, with the error (reproduced in a shell):

$ clang -framework CoreFoundation -framework CoreServices -Wno-deprecated-declarations c_src/mac/*.c -o priv/mac_listener
In file included from c_src/mac/cli.c:2:
In file included from c_src/mac/cli.h:4:

Expanding Bash arrays safely with `set -u`

Prior to Bash 4.4 set -u treated empty arrays as "unset", and terminates the process. There are a number of possible workarounds using array parameter expansion, however almost all of them fail in certain Bash versions.

This gist is a supplement to this StackOverflow post.

Elapsed and execution time display for commands in ZSH

Append this to your ~/.zshrc file.

function preexec() {
 timer=$(($(date +%s%0N)/1000000))

Note:

Unsupported configuration, some functionality (Hadoop, MongoDB, etc) may be lost by removing OSGI. That said, this makes PDI start up much, much quicker

Steps:

Required:

Remove plugins/pentaho-big-data-plugin

	# DO NOT TRY THIS ON A MAC or WSL2 :) use a ubuntu vm or something!

	# Run the same kubekins container used in the CI job
	IMAGE=gcr.io/k8s-staging-test-infra/kubekins-e2e:v20240209-82001bc8c5-main

	# Create a temp directory for the DIND docker - see the baked in assumption in some of our images here - https://cs.k8s.io/?q=docker-graph&i=nope&files=&excludeFiles=&repos=kubernetes/test-infra
	(sudo mkdir -p /tmp/docker-graph && sudo chmod -R 777 /tmp/docker-graph && cd /tmp/docker-graph && rm -rf *)

	# Run as a privileged container, mount both the kubernetes directory and the docker-graph directory
	docker run -e DOCKER_IN_DOCKER_ENABLED=true \

	#! /usr/bin/env stack
	-- stack --resolver lts-18.8 script

	{-# LANGUAGE OverloadedStrings #-}

	{-
	This is a handy illustration of converting between five of the commonly-used
	string types in Haskell (String, ByteString, lazy ByteString, Text and lazy
	Text).

	// shutdown adds a context.Context to the GracefulStop method of
	// grpc.Server, allowing to set a timeout before calling Stop.
	func shutdown(ctx context.Context, s *grpc.Server) error {
	ok := make(chan struct{})
	// NOTE: GracefulStop will return instantly
	// when Stop it called, preventing this
	// goroutine from leaking.
	go func() {
	s.GracefulStop()
	close(ok)