Enum install_wheel_rs::InstallLocation

pub enum InstallLocation<T: Deref<Target = Path>> {
    Venv {
        venv_base: T,
        python_version: (u8, u8),
    },
    Monotrail {
        monotrail_root: T,
        python: PathBuf,
        python_version: (u8, u8),
    },
}

Multiplexing between venv install and monotrail install

For monotrail, we have a structure that is {monotrail}/{normalized(name)}/{version}/tag

We use a lockfile to prevent multiple instance writing stuff on the same time As of pip 22.0, e.g. pip install numpy; pip install numpy; pip install numpy will nondeterministically fail

I was also thinking about making a shared lock on the import side, but monotrail install is supposedly atomic (by directory renaming), while for venv installation there can’t be atomicity (we need to add lots of different file without a top level directory / key-turn file we could rename) and the locking would also need to happen in the import mechanism itself to ensure

Variants

Venv

Fields

venv_base: T

absolute path

python_version: (u8, u8)

Monotrail

Fields

monotrail_root: T

python: PathBuf

python_version: (u8, u8)

Implementations

impl<T: Deref<Target = Path>> InstallLocation<T>

pub fn get_python(&self) -> PathBuf

Returns the location of the python interpreter

pub fn get_python_version(&self) -> (u8, u8)

pub fn is_installed(&self, normalized_name: &str, version: &str) -> bool

TODO: This function is unused?

impl InstallLocation<PathBuf>

pub fn acquire_lock(&self) -> Result<InstallLocation<LockedDir>>