pwndbg: fix runtime python deps, fixes #71071

pwndbg is a Python module for gdb. The built-in interpreter is used and
pwndbg offers additional routines. Packaging this is tricky because that
interpreter needs to be used. Using `python3.withPackages` won't work.
By setting `NIX_PYTHONPATH`, the interpreter should pick up pwndbg and
its dependencies.

If `NIX_PYTHONPATH` does not function we can fall back to `PYTHONPATH`.
An example of when that won't work is if pwndbg runs a script of itself
in a subshell. `NIX_PYTHONPATH` would be  unset, but `PYTHONPATH` not.
This commit is contained in:
Frederik Rietdijk 2019-10-16 09:55:01 +02:00
parent 80ac778c06
commit 27a9800e85
2 changed files with 22 additions and 32 deletions

View file

@ -1,33 +1,12 @@
{ stdenv
, python3
, fetchFromGitHub
, makeWrapper
, gdb
, future
, isort
, psutil
, pycparser
, pyelftools
, python-ptrace
, ROPGadget
, six
, unicorn
, pygments
, }:
}:
stdenv.mkDerivation rec {
pname = "pwndbg";
version = "2019.01.25";
src = fetchFromGitHub {
owner = "pwndbg";
repo = "pwndbg";
rev = version;
sha256 = "0k7n6pcrj62ccag801yzf04a9mj9znghpkbnqwrzz0qn3rs42vgs";
};
nativeBuildInputs = [ makeWrapper ];
propagatedBuildInputs = [
let
pythonPath = with python3.pkgs; makePythonPath [
future
isort
psutil
@ -40,16 +19,27 @@ stdenv.mkDerivation rec {
pygments
];
in stdenv.mkDerivation rec {
pname = "pwndbg";
version = "2019.01.25";
format = "other";
src = fetchFromGitHub {
owner = "pwndbg";
repo = "pwndbg";
rev = version;
sha256 = "0k7n6pcrj62ccag801yzf04a9mj9znghpkbnqwrzz0qn3rs42vgs";
};
nativeBuildInputs = [ makeWrapper ];
installPhase = ''
mkdir -p $out/share/pwndbg
cp -r *.py pwndbg $out/share/pwndbg
chmod +x $out/share/pwndbg/gdbinit.py
makeWrapper ${gdb}/bin/gdb $out/bin/pwndbg \
--add-flags "-q -x $out/share/pwndbg/gdbinit.py"
'';
preFixup = ''
sed -i "/import sys/a import sys; sys.path[0:0] = '$PYTHONPATH'.split(':')" \
$out/share/pwndbg/gdbinit.py
--add-flags "-q -x $out/share/pwndbg/gdbinit.py" \
--set NIX_PYTHONPATH ${pythonPath}
'';
meta = with stdenv.lib; {

View file

@ -5711,7 +5711,7 @@ in
pwnat = callPackage ../tools/networking/pwnat { };
pwndbg = python3Packages.callPackage ../development/tools/misc/pwndbg { };
pwndbg = callPackage ../development/tools/misc/pwndbg { };
pycangjie = pythonPackages.pycangjie;