pytorch - 💡(How to fix) Fix `python -m pip install --no-build-isolation -v -e .` fails to begin because of `SyntaxError` [4 comments, 2 participants]

git clone https://github.com/pytorch/pytorch/
cd pytorch

python -m venv .venv
source .venv/bin/activate

export CMAKE_PREFIX_PATH="${VIRTUAL_ENV}:${CMAKE_PREFIX_PATH}"

pip install --group dev

python -m pip install --no-build-isolation -v -e .

---

(.venv) yalihupokn@zoqu-endiman:~/Repositories/PT/pytorch$ python -m pip install --no-build-isolation -v -e .
Using pip 25.1.1 from /home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/pip (python 3.14)
Obtaining file:///home/yalihupokn/Repositories/PT/pytorch
  Running command Checking if build backend supports build_editable
  Checking if build backend supports build_editable ... done
  Running command Preparing editable metadata (pyproject.toml)
  Traceback (most recent call last):
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
      main()
      ~~~~^^
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 373, in main
      json_out["return_val"] = hook(**hook_input["kwargs"])
                               ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 209, in prepare_metadata_for_build_editable
      return hook(metadata_directory, config_settings)
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/setuptools/build_meta.py", line 478, in prepare_metadata_for_build_editable
      return self.prepare_metadata_for_build_wheel(
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
          metadata_directory, config_settings
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      )
      ^
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/setuptools/build_meta.py", line 374, in prepare_metadata_for_build_wheel
      self.run_setup()
      ~~~~~~~~~~~~~~^^
    File "/home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/setuptools/build_meta.py", line 317, in run_setup
      exec(code, locals())
      ~~~~^^^^^^^^^^^^^^^^
    File "<string>", line 246
  SyntaxError: from __future__ imports must occur at the beginning of the file
  error: subprocess-exited-with-error
  
  × Preparing editable metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> See above for output.
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  full command: /home/yalihupokn/Repositories/PT/pytorch/.venv/bin/python /home/yalihupokn/Repositories/PT/pytorch/.venv/lib64/python3.14/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py prepare_metadata_for_build_editable /tmp/tmpoo1k9mgc
  cwd: /home/yalihupokn/Repositories/PT/pytorch
  Preparing editable metadata (pyproject.toml) ... error

[notice] A new release of pip is available: 25.1.1 -> 26.0.1
[notice] To update, run: pip install --upgrade pip
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

---

(.venv) yalihupokn@zoqu-endiman:~/Repositories/PT/pytorch$ curl -sL https://raw.githubusercontent.com/pytorch/pytorch/main/torch/utils/collect_env.py | python
Collecting environment information...
PyTorch version: N/A
Is debug build: N/A
CUDA used to build PyTorch: N/A
ROCM used to build PyTorch: N/A

OS: Fedora Linux Asahi Remix 43 (KDE Plasma Desktop Edition) (aarch64)
GCC version: (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7)
Clang version: 21.1.8 (Fedora 21.1.8-4.fc43)
CMake version: version 4.3.1
Libc version: glibc-2.42

Python version: 3.14.3 (main, Mar 26 2026, 00:00:00) [GCC 15.2.1 20260123 (Red Hat 15.2.1-7)] (64-bit runtime)
Python platform: Linux-6.18.15-400.asahi.fc43.aarch64+16k-aarch64-with-glibc2.42
Is CUDA available: N/A
CUDA runtime version: Could not collect
CUDA_MODULE_LOADING set to: N/A
GPU models and configuration: Could not collect
Nvidia driver version: Could not collect
cuDNN version: Could not collect
Is XPU available: N/A
HIP runtime version: N/A
MIOpen runtime version: N/A
Is XNNPACK available: N/A
Caching allocator config: N/A

CPU:
Architecture:                            aarch64
CPU op-mode(s):                          64-bit
Byte Order:                              Little Endian
CPU(s):                                  8
On-line CPU(s) list:                     0-7
Vendor ID:                               Apple
Model name:                              Blizzard-M2
Model:                                   0
Thread(s) per core:                      1
Core(s) per socket:                      4
Socket(s):                               1
Stepping:                                0x1
Frequency boost:                         disabled
CPU(s) scaling MHz:                      25%
CPU max MHz:                             2424.0000
CPU min MHz:                             600.0000
BogoMIPS:                                48.00
Flags:                                   fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint i8mm bf16 bti ecv
Model name:                              Avalanche-M2
Model:                                   0
Thread(s) per core:                      1
Core(s) per socket:                      4
Socket(s):                               1
Stepping:                                0x1
CPU(s) scaling MHz:                      45%
CPU max MHz:                             3204.0000
CPU min MHz:                             660.0000
BogoMIPS:                                48.00
Flags:                                   fp asimd evtstrm aes pmull sha1 sha2 crc32 atomics fphp asimdhp cpuid asimdrdm jscvt fcma lrcpc dcpop sha3 asimddp sha512 asimdfhm dit uscat ilrcpc flagm ssbs sb paca pacg dcpodp flagm2 frint i8mm bf16 bti ecv
L1d cache:                               768 KiB (8 instances)
L1i cache:                               1.3 MiB (8 instances)
L2 cache:                                20 MiB (2 instances)
NUMA node(s):                            1
NUMA node0 CPU(s):                       0-7
Vulnerability Gather data sampling:      Not affected
Vulnerability Ghostwrite:                Not affected
Vulnerability Indirect target selection: Not affected
Vulnerability Itlb multihit:             Not affected
Vulnerability L1tf:                      Not affected
Vulnerability Mds:                       Not affected
Vulnerability Meltdown:                  Not affected
Vulnerability Mmio stale data:           Not affected
Vulnerability Old microcode:             Not affected
Vulnerability Reg file data sampling:    Not affected
Vulnerability Retbleed:                  Not affected
Vulnerability Spec rstack overflow:      Not affected
Vulnerability Spec store bypass:         Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1:                Mitigation; __user pointer sanitization
Vulnerability Spectre v2:                Mitigation; CSV2, but not BHB
Vulnerability Srbds:                     Not affected
Vulnerability Tsa:                       Not affected
Vulnerability Tsx async abort:           Not affected
Vulnerability Vmscape:                   Not affected

Versions of relevant libraries:
[pip3] numpy==2.4.4
[pip3] optree==0.19.0
[conda] Could not collect
(.venv) yalihupokn@zoqu-endiman:~/Repositories/PT/pytorch$