无法验证这些需求的哈希值,因为我们无法哈希版本控制存储库

我有以下要求文件:

...
sqlalchemy==1.2.3 --hash=sha256:9e9ec143e2e246f385cfb2de8daa89d2fa466279addcb7be9e102988fdf33d24
werkzeug==0.14.1 --hash=sha256:d5da73735293558eb1651ee2fddc4d0dedcfa06538b8813a2e20011583c9e49b  
git+ssh://gitlab.domain.com/private_pkg.git#egg=private_pkg

从shell works perfect安装项目:

pip install git+ssh://gitlab.domain.com/private_pkg.git#egg=private_pkg

但尝试从需求文件安装它会引发以下错误:

Can't verify hashes for these requirements because we don't have a way to hash version control repositories:
    private_pkg from git+ssh://gitlab.domain.com/private_pkg.git#egg=private_pkg (from -r requirements/prod.lock (line 30))

注意: 需求文件a中的哈希值生成自 pipenv lock -r