From 746b1f3d7b8a928080d4de75ac4cc7cdf9283872 Mon Sep 17 00:00:00 2001
From: Georges Dubus <georges.dubus@micropsi-industries.com>
Date: Wed, 17 Aug 2022 11:57:05 +0200
Subject: [PATCH] Fix `nix (build|shell) mach-nix#gen`

`nix (build|shell) mach-nix#gen` is broken on recent nix versions because
of https://github.com/NixOS/nix/issues/6690.

This commit fixes it by removing `meta` from the list of handled packages.
As a result, nix can access the derivation's meta as expected, and work
as expected.

The side effect is that the `meta` package on pypi cannot be used, but
that's a cost we have to pay.
---
 mach_nix/nix/withDot.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mach_nix/nix/withDot.nix b/mach_nix/nix/withDot.nix
index ed56d7b..ca8e83f 100644
--- a/mach_nix/nix/withDot.nix
+++ b/mach_nix/nix/withDot.nix
@@ -10,7 +10,7 @@ let
       };
       attrs_list = map (n:
           { name = n; value = (gen attr (selected ++ [n])); }
-      ) names;
+      ) (filter (n: n!= "meta") names);
       drv = if attr == "" then pyEnvBase else pyEnvBase."${attr}";
       pyEnv = drv.overrideAttrs (oa: {
         passthru =