Allow Windows users to choose the Python environment location instead of always using the C: drive

[popuguytheparrot]

Problem

On Windows, the installer always creates the Python environment on the system drive (C:), typically under the user's profile (AppData).

This is problematic for users who:

keep the system partition small (e.g. 100–150 GB),
have a dedicated SSD/HDD for development or AI workloads,
want to avoid filling the system drive with Python packages and dependencies.

Since the embedded Python environment and installed packages can grow significantly over time, forcing everything onto C: is inconvenient.

Expected behavior

During installation, allow the user to:

choose the location of the Python environment, or
specify a custom installation directory (for example D:\ComfyUI\python), or
respect an environment variable or command-line argument that overrides the default location.
Benefits
Prevents unnecessary usage of the system drive.
Makes installations more flexible for multi-drive systems.
Better matches common Windows software installation practices.
Helps users with limited free space on C:.

I think this would improve the Windows installation experience without affecting existing users, since the current behavior could remain the default.

[MoeMonsuta]

Try the manual install? Sounds like what you need.

[Kosinkadink]

You can select the drives used for Comfy Desktop files, including individual installations, etc. The only files kept on your main drive (C drive) are related to the electron app, which are only a few hundred MB in size. Everything else you can customize where you save.

If you choose desktop's initial install location to not be the C drive, all default locations will be made to be in that same drive (unless you change them yourself).

[popuguytheparrot]

You can select the drives used for Comfy Desktop files, including individual installations, etc. The only files kept on your main drive (C drive) are related to the electron app, which are only a few hundred MB in size. Everything else you can customize where you save.

If you choose desktop's initial install location to not be the C drive, all default locations will be made to be in that same drive (unless you change them yourself).

this not true, after select disk space, comfy desktop install python enviroment to C