adnelson

def raise_msg(msg, path):
    if len(path) > 0:
        msg = 'At path {}: {}'.format('.'.join(path), msg)
    raise AssertionError(msg)

def list_diff(list1, list2, path):
    if len(list1) != len(list2):
        raise_msg('List lengths differ: {} vs {}'
                  .format(len(list1), len(list2)), path)
    for i, (obj1, obj2) in enumerate(zip(list1, list2)):

adnelson

class ParseError(Exception):
    pass

# Each parser function should take a list of characters and an index
# into that list, and return something that it parsed and a new index.

def parse_optionally(parser):
    """
    Parses or returns None
    """

adnelson

# Function which takes a list of packages to install and creates a 
# tarball which contains the full list of dependencies of those paths, 
# and a script which will install them.
# 
# For example, here's how you would create a tarball packaging up 
# python3 and nodejs:
#
#
# let
#   pkgs = import <nixpkgs> {};

adnelson

{
### THIS WORKS
  # Fetches a package from a github repo.
  fetchRepo = {repo, name, version, sha256}:
    let
      github_token = builtins.getEnv "GITHUB_TOKEN";
      url = "https://api.github.com/repos/adnelson/${repo}/tarball/${name}%2F${version}";
      curlCmd = "curl --fail -fL -H 'Authorization: token ${github_token}'";
    in
    pkgs.stdenv.mkDerivation {