in order to be able to disable osxkeychain credential helper if no
wanted / necessary. Keep it `true` by default such that current logic is
not affected.
Signed-off-by: Andreas Schmid <service@aaschmid.de>
Also add missing installPhase hooks, and clarify license.
I'm assuming GPL-2.0-only, because it doesn't seem to be specified, and
the helper links with git, which is -only.
- Migrate from fetchFromGitHub to fetchPypi to ease SHA256 handling
- Drop tests (while not included with PyPI releases)
- Install a man page (as shipped by upstream)
- Move buildInputs to runtime only
Co-Authored-By: Silvan Mosberger <contact@infinisil.com>
###### Motivation for this change
Update to latest upstream version
###### Things done
* [ ] Tested using sandboxing ([nix.useSandbox](http://nixos.org/nixos/manual/options.html#opt-nix.useSandbox) on NixOS, or option `sandbox` in [`nix.conf`](http://nixos.org/nix/manual/#sec-conf-file) on non-NixOS linux)
* Built on platform(s)
* [x] NixOS
* [ ] macOS
* [ ] other Linux distributions
* [ ] Tested via one or more NixOS test(s) if existing and applicable for the change (look inside [nixos/tests](https://github.com/NixOS/nixpkgs/blob/master/nixos/tests))
* [ ] Tested compilation of all pkgs that depend on this change using `nix-shell -p nix-review --run "nix-review wip"`
* [x] Tested execution of all binary files (usually in `./result/bin/`)
* [ ] Determined the impact on package closure size (by running `nix path-info -S` before and after)
* [ ] Ensured that relevant documentation is up to date
* [x] Fits [CONTRIBUTING.md](https://github.com/NixOS/nixpkgs/blob/master/.github/CONTRIBUTING.md).
###### Notify maintainers
cc @blitz @Ma27 @tfc @worldofpeace
