mkd.py

#!/usr/bin/env python3

import re
import subprocess
import tempfile

call_package_re = re.compile(r"([^ ]*) = libsForQt5\.callPackage \.\./([^ ]*)")
stdenv_re = re.compile(r"^([ ]*in )?stdenv.mkDerivation", re.MULTILINE)

script = """
    set -e
    pushd {d}
    nix-build '<nixpkgs>' -A {attr}
    for E in result/bin/*; do
      echo MKD_STARTING_BINARY
      timeout -k 2 1 $E
    done
"""

with open("pkgs/top-level/all-packages.nix") as allf:
    for line in allf:
        m = call_package_re.search(line)
        if m is None:
            continue

        attr = m[1]
        fname = "pkgs/" + m[2]
        if not fname.endswith(".nix"):
            fname += "/default.nix"

        with open(fname) as df:
            contents = df.read()

        if stdenv_re.search(contents) is None:
            continue
        if "broken = true" in contents or "wrapQtAppsHook" in contents:
            continue

        #print("{}:\t{}".format(attr, fname))
        with tempfile.TemporaryDirectory(suffix="mkD") as tmp:
            result = subprocess.run(script.format(d=tmp, attr=attr), shell=True, capture_output=True)
            hits = result.stderr.count(b"qt.qpa.plugin: Could not find the Qt platform plugin")
            total = result.stdout.count(b"MKD_STARTING_BINARY")
            if hits > 0:
                print("{}\t{}/{}:\t{}".format(attr, hits, total, fname))