Error when running pypi2nix command

[bbtdev]

source root is pip-b8c16a0
setting SOURCE_DATE_EPOCH to timestamp 315619200 of file pip-b8c16a0/tox.ini
patching sources
applying patch /nix/store/iz5gi7nz4xdxfcb8372dmi4rkclpqd4m-reproducible.patch
can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/src/pip/_internal/operations/install/wheel.py b/src/pip/_internal/operations/install/wheel.py
|index e7315ee4..4e36b03d 100644
|--- a/src/pip/_internal/operations/install/wheel.py
|+++ b/src/pip/_internal/operations/install/wheel.py
--------------------------
File to patch:
Skip this patch? [y]
Skipping patch.
1 out of 1 hunk ignored
builder for '/nix/store/27avgb2c30p2m9pj5nd9bc2swfdnqvw4-python3.8-pip-20.1.1.drv' failed with exit code 1
cannot build derivation '/nix/store/df28iq6vx0lc66ljhxphh63hyml3lxvd-python3-3.8.8-env.drv': 1 dependencies couldn't be built
error: build of '/nix/store/df28iq6vx0lc66ljhxphh63hyml3lxvd-python3-3.8.8-env.drv' failed
Do you want to report above issue (a browser will open with prefilled details of issue)? [y/N]: y
Error: While trying to run the command something went wrong.