add uv tooling for e2e gpu tests (#2750)

* add uv tooling for e2e gpu tests

* fixes from PR feedback

* simplify check

* fix env var

* make sure to use uv for other install

* use raw_dockerfile_image

* Fix import

* fix args to experimental dockerfile image call

* use updated modal versions

scripts/unsloth_install.py

@@ -1,11 +1,15 @@
 # noqa
 # pylint: skip-file
+import sys
+
 try:
     import torch
 except ImportError:
     raise ImportError("Install torch via `pip install torch`")
 from packaging.version import Version as V
 
+use_uv = "--uv" in sys.argv[1:]
+
 v = V(torch.__version__)
 cuda = str(torch.version.cuda)
 try:
@@ -31,6 +35,7 @@ elif v < V("2.6.0"):
 else:
     raise RuntimeError(f"Torch = {v} too new!")
 x = x.format(cuda.replace(".", ""), "-ampere" if is_ampere else "")
+uv_prefix = "uv " if use_uv else ""
 print(
-    f'pip install unsloth-zoo==2024.12.1 && pip install --no-deps "unsloth[{x}]==2024.12.4"'
+    f'{uv_prefix}pip install unsloth-zoo==2024.12.1 && {uv_prefix}pip install --no-deps "unsloth[{x}]==2024.12.4"'
 )