diff --git a/bin/boot-qemu b/bin/boot-qemu
deleted file mode 100755
index 1c1cd700..00000000
--- a/bin/boot-qemu
+++ /dev/null
@@ -1,51 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -p qemu -p ruby -i ruby
-
-# Boots a given `result` symlink on a remote system.
-# This is mainly used to speed-up development where
-# an aarch64 host is used to build the system, but the
-# target device is plugged into another system
-
-require_relative "../lib/rb/all.rb"
-require "fileutils"
-include FileUtils
-
-# This assumes `result` is boot.img.
-STORE_PATH = File.readlink("result")
-
-# FIXME : read-only doesn't work...
-$copy_readwrite = true;
-
-begin
-	disk_image = Dir.glob(File.join(File.readlink("result"), "system", "*.img")).first
-	if $copy_readwrite then
-		DISK_IMAGE = "fs.img"
-		cp(disk_image, DISK_IMAGE)
-		chmod("u=rw", DISK_IMAGE)
-	else
-		DISK_IMAGE = disk_image
-	end
-end
-
-unless ARGV.count == 0 then
-	puts "Usage: bin/boot-eqmu"
-	exit 1
-end
-
-KERNEL_INITRD = "result/kernel-initrd"
-
-args = []
-args.push("qemu-system-x86_64")
-args.push("-enable-kvm")
-args.push("-kernel", "#{KERNEL_INITRD}/kernel")
-args.push("-initrd", "#{KERNEL_INITRD}/initrd")
-args.push("-append", File.read("#{KERNEL_INITRD}/cmdline.txt"))
-args.push("-m", "#{File.read("#{KERNEL_INITRD}/ram.txt")}M")
-args.push("-serial", "stdio")
-args.push("-drive", "file=#{DISK_IMAGE},format=raw#{if $copy_readwrite then "" else ",readonly" end}")
-args.push("-device", "e1000,netdev=net0")
-args.push("-netdev", "user,id=net0,hostfwd=tcp::2222-:22,hostfwd=tcp::2323-:23,net=172.16.42.0/24,dhcpstart=172.16.42.1")
-
-run(*args, exec: true)
-
-# vim: ft=ruby
diff --git a/bin/build b/bin/build
deleted file mode 100755
index 4b9dd7a5..00000000
--- a/bin/build
+++ /dev/null
@@ -1,26 +0,0 @@
-#!/usr/bin/env nix-shell
-#!nix-shell -p ruby -i ruby
-
-require_relative "../lib/rb/all.rb"
-
-# Given a device name, instantiates `nix-build` to build
-# everything needed to boot on that device.
-
-if ARGV.count < 1 then
-	puts "Usage: bin/build <device-name>"
-	exit 1
-end
-
-DEVICE = ARGV.shift
-NIXPKGS=File.join(*__dir__.split("/")[0..-2], "nixpkgs")
-
-run(
-	"env", "-i",
-	"nix-build", "-A", "all",
-	"-I", "nixpkgs=#{NIXPKGS}",
-	"--argstr", "device", DEVICE,
-	*ARGV,
-	exec: true
-)
-
-# vim: ft=ruby
diff --git a/lib/rb/all.rb b/lib/rb/all.rb
deleted file mode 100644
index 528bbda1..00000000
--- a/lib/rb/all.rb
+++ /dev/null
@@ -1,2 +0,0 @@
-ROOT = File.join(__dir__, "..", "..")
-require_relative "run.rb"
diff --git a/lib/rb/run.rb b/lib/rb/run.rb
deleted file mode 100644
index 086f7b00..00000000
--- a/lib/rb/run.rb
+++ /dev/null
@@ -1,12 +0,0 @@
-require "shellwords"
-
-def run(*cmd, exec: false)
-	puts " $ #{cmd.shelljoin}"
-
-	if exec then
-		Kernel.exec(*cmd)
-	else
-		system(*cmd)
-	end
-	exit $?.exitstatus unless $?.exitstatus == 0
-end