#!/usr/bin/env bash

input=$(
	echo ":lf nixpkgs"
	echo "pkgs = legacyPackages.\${builtins.currentSystem}"
	echo ":doc $1"
	echo ":e $1"
)
echo "$input" | nix repl --quiet 2> >(grep -v "ioctl" |
  grep -v "^error: value does not have documentation$" |
  grep -vP "error: .* has no source location information" |
  grep -vP "Welcome to Nix \d+\.\d+\.\d+\." |
  grep -vP "Added \d+ variables." |
  grep -v -e '^[[:space:]]*$'
)