Reconcile PR #7256 (Windows torch 2.11 + release preservation, installer
comment reduction, torch 2.11 default line) with 77 commits of main install
rewrites. Base is main's newer install semantics; this branch's still-novel
contributions are layered on top.
Key decisions:
- install.ps1: kept main's rollback lifecycle (try/finally Restore-StudioVenvRollback,
#7342) and the installed-version report (#7265); layered this branch's torch-2.11
allowance (torch<2.12.0 on the Windows CUDA fresh-install, CPU fallback and flavor
repairs), the release-preservation port (Get-InstalledTorchVersionRaw / kept-release
installs / UNSLOTH_KEPT_TORCH handoff / torch-overrides freeze) and the Exit-InstallFailure
UNSLOTH_KEPT_TORCH clear.
- install.sh: took main's newer AMD/Strix routing (per-arch index reroute #7264/#7300,
runtime-less gfx inference #7305, KFD detection fix#7314, Radeon 8065S regex #7290,
signal-restore trap #7342) and the #7365 unsloth pin bump; kept this branch's
_TORCH_CEILING/_TORCHVISION_CEILING/_TORCHAUDIO_CEILING refactor widening the default
ceiling to torch<2.12.0.
- studio/install_python_stack.py: deferred all five code conflicts to main's Strix
inference logic (result is AST-identical to main; only comment reductions remain).
- studio/setup.ps1: took main's comment covering the whisper.cpp dictation markers
(#7095); the UNSLOTH_KEPT_TORCH consumption handoff auto-merged intact.
Dropped as superseded by main: this branch's stale unsloth>=2026.7.4 pins (main #7365),
the older rocm7.1->rocm7.2 Strix reroute (main #7264/#7300), the narrow Radeon 80[0-9]0S
regex (main #7290), and the pre-inference has_hip_torch gate (main's rocm_torch_ready gate,
Codex P1 #7305). The two review-item fixes (grep -E in test_torch_constraint.sh,
UNSLOTH_KEPT_TORCH clear in Exit-InstallFailure) survive.
a14cc540ae