This avoids problems where newer versions of niv may break workflows,
due to backwards incompatible changes, or just bugs.
By default, we track master, which was the current behavior. However,
one may want to pin to a particular version of niv, because niv+Nix are
all about pinning.
This avoids problems where newer versions of niv may break workflows, due to backwards incompatible changes, or just bugs.
By default, we track master, which was the current behavior. However, one may want to pin to a particular version of niv, because niv+Nix are all about pinning.
Closes #4