From d68aba4cfb5d7998fbd087f7bf6f5d6f9fb5416a Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Sun, 1 Jan 2017 17:57:26 +0100
Subject: [PATCH] Python: script names now include full path

Certain programs, like zim, calibre and now also apparently mercurial,
rely on sys.argv[0] providing not just the script name but the full
path.

The Python docs [1] state the following on the matter:

> argv[0] is the script name (it is operating system dependent whether
this is a full pathname or not).

Therefore, scripts should not expect to receive a full path.
Unfortunately some do. While this can be considered a bug, there doesn't
seem any reason not to provide the full path. Therefore we now provide
the full path.

[1]
https://docs.python.org/3.5/library/sys.html?highlight=sys.argv#sys.argv
---
 pkgs/development/interpreters/python/wrap-python.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/interpreters/python/wrap-python.nix b/pkgs/development/interpreters/python/wrap-python.nix
index b965ff5350b..1efd777bb05 100644
--- a/pkgs/development/interpreters/python/wrap-python.nix
+++ b/pkgs/development/interpreters/python/wrap-python.nix
@@ -35,7 +35,7 @@ makeSetupHook {
           import sys
           import site
           import functools
-          sys.argv[0] = '"'$(basename "$f")'"'
+          sys.argv[0] = '"'$(readlink -f "$f")'"'
           functools.reduce(lambda k, p: site.addsitedir(p, k), ['"$([ -n "$program_PYTHONPATH" ] && (echo "'$program_PYTHONPATH'" | sed "s|:|','|g") || true)"'], site._init_pathinfo())
         '';