Demucs No-Longer Installable via PIP Since Python 3.10

[Enverex]

🐛 Bug Report

I don't think I'm doing anything stupid here. Demucs worked fine with Python 3.9 and happily installed via PIP. But since Python 3.10 came out, it doesn't appear to work via PIP anymore.

To Reproduce

Run "python -m pip install -U demucs" or "pip install demucs"

Expected behavior

To get the usual PIP installation progress bars, messages and for it to install with dependencies.

Actual Behavior

A lot of errors:

Collecting demucs
  Using cached demucs-3.0.3.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/17/24/3b75e03243651603b95d8dbdb99eba104a464d3e8ca26d1ad54d95a985c5/demucs-3.0.3.tar.gz#sha256=c779a75537088bef53e96d67c5a999b5a9189d82ea78d9440df718ba3a318308 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/17/24/3b75e03243651603b95d8dbdb99eba104a464d3e8ca26d1ad54d95a985c5/demucs-3.0.3.tar.gz#sha256=c779a75537088bef53e96d67c5a999b5a9189d82ea78d9440df718ba3a318308 has different version in metadata: '3.0.3'
  Using cached demucs-3.0.2.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/6b/ed/61e40fe1d1b43507d2d4d5981711d556504bab18876c2474ae5e0751e9e3/demucs-3.0.2.tar.gz#sha256=757dd6a5cdbf548f33940f9b5838f3187f1711c58ef25f3c2f08bcd51de1e7a7 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/6b/ed/61e40fe1d1b43507d2d4d5981711d556504bab18876c2474ae5e0751e9e3/demucs-3.0.2.tar.gz#sha256=757dd6a5cdbf548f33940f9b5838f3187f1711c58ef25f3c2f08bcd51de1e7a7 has different version in metadata: '3.0.2'
  Using cached demucs-3.0.1.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/5b/93/8a96140c92b11f7928008187a37b4378129510be0d1dcdcb289ddfe258f3/demucs-3.0.1.tar.gz#sha256=54c4897bbce99e043137199ec9373f4447e3e88fc3f8c5ade2409a51c7f9ae86 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/5b/93/8a96140c92b11f7928008187a37b4378129510be0d1dcdcb289ddfe258f3/demucs-3.0.1.tar.gz#sha256=54c4897bbce99e043137199ec9373f4447e3e88fc3f8c5ade2409a51c7f9ae86 has different version in metadata: '3.0.1'
  Using cached demucs-3.0.0.tar.gz (1.5 MB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/setup.py'"'"'; __file__='"'"'/tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-4322nv3r
         cwd: /tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/
    Complete output (7 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/setup.py", line 39, in <module>
        REQUIRED = load_requirements('requirements_minimal.txt')
      File "/tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/setup.py", line 34, in load_requirements
        required = [i.strip() for i in open(HERE / name)]
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-sz3n7y4o/demucs_22b643e65a08480b9bde7f8285820c1b/requirements_minimal.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/5b/a5/d29ca8f45f1d6dc814d595b9874cb209d45e97c1bbfb41c48968be2e1231/demucs-3.0.0.tar.gz#sha256=d91beb476dfec0362a531a935429f429f3f8dae0d0772da3efb4fad73e9116d2 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
  Using cached demucs-2.0.3.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/48/91/c6594847bc3ab99597f58acdb99c022cfe1d6027353e695778dd90301128/demucs-2.0.3.tar.gz#sha256=f7a8c0cdc9be24d7d8d0e826e64e5ea1cd7a7aa8a3032fe786b932fd7b4ffcce (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/48/91/c6594847bc3ab99597f58acdb99c022cfe1d6027353e695778dd90301128/demucs-2.0.3.tar.gz#sha256=f7a8c0cdc9be24d7d8d0e826e64e5ea1cd7a7aa8a3032fe786b932fd7b4ffcce has different version in metadata: '2.0.3'
  Using cached demucs-2.0.2.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/ee/8b/8f3246b5b21cc137c02aeaf9cbeff2a6d1f65aafdb325f11aecc13ba07c3/demucs-2.0.2.tar.gz#sha256=0ca2ee067604915265db990b231fa9ad56c75bf51c12df0c4cec611f31f03bc2 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/ee/8b/8f3246b5b21cc137c02aeaf9cbeff2a6d1f65aafdb325f11aecc13ba07c3/demucs-2.0.2.tar.gz#sha256=0ca2ee067604915265db990b231fa9ad56c75bf51c12df0c4cec611f31f03bc2 has different version in metadata: '2.0.2'
  Using cached demucs-2.0.1.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/3b/37/5e853b339c193ce4d6bf47f1c1766ee938c1976eedec0ff9461d9c0b8e10/demucs-2.0.1.tar.gz#sha256=82448b6a57854150f793da407df41dc14102b2923682a10a4457765ea086501b (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/3b/37/5e853b339c193ce4d6bf47f1c1766ee938c1976eedec0ff9461d9c0b8e10/demucs-2.0.1.tar.gz#sha256=82448b6a57854150f793da407df41dc14102b2923682a10a4457765ea086501b has different version in metadata: '2.0.1'
  Using cached demucs-2.0.0.tar.gz (45 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/80/77/4991edb8d4764892260a913048ee607b50da520c4638f2c824ce1bdbe30e/demucs-2.0.0.tar.gz#sha256=a7dac70f14c03163739ba3da59028aae889548c0f6f9f9780b8fa8e43b319b99 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/80/77/4991edb8d4764892260a913048ee607b50da520c4638f2c824ce1bdbe30e/demucs-2.0.0.tar.gz#sha256=a7dac70f14c03163739ba3da59028aae889548c0f6f9f9780b8fa8e43b319b99 has different version in metadata: '2.0.0'
  Using cached demucs-0.0.2.tar.gz (45 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/45/01/b59d89dc34a990ebe5ef66880ca43ec408c31f0a7689975367fd9e52592f/demucs-0.0.2.tar.gz#sha256=4914357489d0d1652f256972c73d385dfee0529c545a8547b139ac88956353e8 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/45/01/b59d89dc34a990ebe5ef66880ca43ec408c31f0a7689975367fd9e52592f/demucs-0.0.2.tar.gz#sha256=4914357489d0d1652f256972c73d385dfee0529c545a8547b139ac88956353e8 has different version in metadata: '0.0.2'
  Using cached demucs-0.0.1.tar.gz (45 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-sz3n7y4o/demucs_3db170e5714941f0a591ea7bc3a9dd16/setup.py'"'"'; __file__='"'"'/tmp/pip-install-sz3n7y4o/demucs_3db170e5714941f0a591ea7bc3a9dd16/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-zxt1x3k_
         cwd: /tmp/pip-install-sz3n7y4o/demucs_3db170e5714941f0a591ea7bc3a9dd16/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-sz3n7y4o/demucs_3db170e5714941f0a591ea7bc3a9dd16/setup.py", line 25, in <module>
        REQUIRED = [i.strip() for i in open(HERE / "requirements.txt")]
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-sz3n7y4o/demucs_3db170e5714941f0a591ea7bc3a9dd16/requirements.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/f0/0b/ebb129e8724e8822e8f94e231118109f73b4a77ff76d47142e0fced854d7/demucs-0.0.1.tar.gz#sha256=76841228f4befedd0e94387c0a0f03e0b3ab8aacf40001a8f4b062b28160535d (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
  Using cached demucs-0.0.0.tar.gz (1.5 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-sz3n7y4o/demucs_b04439b2272b448d80dba677290fccec/setup.py'"'"'; __file__='"'"'/tmp/pip-install-sz3n7y4o/demucs_b04439b2272b448d80dba677290fccec/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-okmi6md_
         cwd: /tmp/pip-install-sz3n7y4o/demucs_b04439b2272b448d80dba677290fccec/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-sz3n7y4o/demucs_b04439b2272b448d80dba677290fccec/setup.py", line 19, in <module>
        REQUIRED = [i.strip() for i in open("requirements.txt")]
    FileNotFoundError: [Errno 2] No such file or directory: 'requirements.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/80/04/5d0473a2e1261c3789ff6083febb5f797776a42dbbe069691b9cc73c9f10/demucs-0.0.0.tar.gz#sha256=8050de572ca5806244a28130b71b81d2542a02ebb91f37ff727becd7eb03debf (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement demucs
ERROR: No matching distribution found for demucs

Your Environment

• Python and PyTorch version: Python 3.10.2
• Operating system and version (desktop or mobile): Arch Linux x86_64
• Hardware (gpu or cpu, amount of RAM etc.): AMD Ryzen 7 3700X with 64GB of DDR4.

[adefossez]

Can you try the following:

python -m pip install --use-deprecated legacy-resolver demucs

[Enverex]

That gets much further... but now fails on a dependency.

Collecting demucs
  Using cached demucs-3.0.3.tar.gz (1.5 MB)
Collecting dora-search
  Using cached dora_search-0.1.8.tar.gz (74 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Collecting diffq>=0.2.1
  Using cached diffq-0.2.2-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_12_x86_64.manylinux2010_x86_64.whl (424 kB)
Collecting julius>=0.2.3
  Using cached julius-0.2.6.tar.gz (58 kB)
ERROR: Could not find a version that satisfies the requirement lameenc>=1.2 (from demucs) (from versions: none)
ERROR: No matching distribution found for lameenc>=1.2 (from demucs)

[adefossez]

See chrisstaite/lameenc#15

Temporary fix would be to use Anaconda to get python3.9. Building locally lameenc is another possiblity.

[adefossez]

there should be lameenc available now, can you give it another go ?

[Enverex]

The legacy option (python -m pip install --use-deprecated legacy-resolver demucs) no-longer works:

ERROR: Exception:
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/pip/_internal/cli/base_command.py", line 223, in _main
    status = self.run(options, args)
  File "/usr/lib/python3.10/site-packages/pip/_internal/cli/req_command.py", line 180, in wrapper
    return func(self, options, args)
  File "/usr/lib/python3.10/site-packages/pip/_internal/commands/install.py", line 320, in run
    requirement_set = resolver.resolve(
  File "/usr/lib/python3.10/site-packages/pip/_internal/resolution/legacy/resolver.py", line 180, in resolve
    discovered_reqs.extend(self._resolve_one(requirement_set, req))
  File "/usr/lib/python3.10/site-packages/pip/_internal/resolution/legacy/resolver.py", line 385, in _resolve_one
    dist = self._get_dist_for(req_to_install)
  File "/usr/lib/python3.10/site-packages/pip/_internal/resolution/legacy/resolver.py", line 328, in _get_dist_for
    skip_reason = self._check_skip_installed(req)
  File "/usr/lib/python3.10/site-packages/pip/_internal/resolution/legacy/resolver.py", line 233, in _check_skip_installed
    req_to_install.check_if_exists(self.use_user_site)
  File "/usr/lib/python3.10/site-packages/pip/_internal/req/req_install.py", line 438, in check_if_exists
    if not self.req.specifier.contains(existing_version, prereleases=True):
  File "/usr/lib/python3.10/site-packages/packaging/specifiers.py", line 790, in contains
    item = parse(item)
  File "/usr/lib/python3.10/site-packages/packaging/version.py", line 57, in parse
    return Version(version)
  File "/usr/lib/python3.10/site-packages/packaging/version.py", line 296, in __init__
    match = self._regex.search(version)
TypeError: expected string or bytes-like object

Trying without legacy now does work, but again fails on another dependency. "dora_search" this time it seems:

Requirement already satisfied: demucs in /usr/lib/python3.10/site-packages (3.0.3)
Collecting dora-search
  Using cached dora_search-0.1.8.tar.gz (74 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
WARNING: Discarding https://files.pythonhosted.org/packages/f7/ad/53327fcb979720695f44c0de78f8a7693a9471ee8c6aebe14cf49cfc8686/dora_search-0.1.8.tar.gz#sha256=97dc5b1c5158f914188ab2bad4f934a4bf2827151c616ad2d0035f276e530b9f (from https://pypi.org/simple/dora-search/) (requires-python:>=3.7.0). Requested dora-search from https://files.pythonhosted.org/packages/f7/ad/53327fcb979720695f44c0de78f8a7693a9471ee8c6aebe14cf49cfc8686/dora_search-0.1.8.tar.gz#sha256=97dc5b1c5158f914188ab2bad4f934a4bf2827151c616ad2d0035f276e530b9f (from demucs) has different version in metadata: '0.1.8'
  Using cached dora_search-0.1.7.tar.gz (68 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
WARNING: Discarding https://files.pythonhosted.org/packages/2c/ac/47d78e0596af795ee0533cef3def47a8711d2210a72ef1e95a7d4ae10750/dora_search-0.1.7.tar.gz#sha256=1f6c0663074f5a152e86f8babf03940d9b3f38e68c27dfb761d4777084e72c8f (from https://pypi.org/simple/dora-search/) (requires-python:>=3.7.0). Requested dora-search from https://files.pythonhosted.org/packages/2c/ac/47d78e0596af795ee0533cef3def47a8711d2210a72ef1e95a7d4ae10750/dora_search-0.1.7.tar.gz#sha256=1f6c0663074f5a152e86f8babf03940d9b3f38e68c27dfb761d4777084e72c8f (from demucs) has different version in metadata: '0.1.7'
  Using cached dora_search-0.1.6.tar.gz (102 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
WARNING: Discarding https://files.pythonhosted.org/packages/b6/5b/6c35c3761551a44aa9d37ad4f9458097e92d64081b01f85ba3fbafd20f53/dora_search-0.1.6.tar.gz#sha256=65ddd951b0c178937e043e30115542d92decf1273deaac19187b61462c6eacc8 (from https://pypi.org/simple/dora-search/) (requires-python:>=3.7.0). Requested dora-search from https://files.pythonhosted.org/packages/b6/5b/6c35c3761551a44aa9d37ad4f9458097e92d64081b01f85ba3fbafd20f53/dora_search-0.1.6.tar.gz#sha256=65ddd951b0c178937e043e30115542d92decf1273deaac19187b61462c6eacc8 (from demucs) has different version in metadata: '0.1.6'
  Using cached dora_search-0.1.5.tar.gz (102 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
WARNING: Discarding https://files.pythonhosted.org/packages/b4/23/a032df818739bd4aad501f7cec5074a76842baa453902ebf3723a9915efd/dora_search-0.1.5.tar.gz#sha256=d9786a85ed1caac4f774a6b35e5b657498533b91e70a4762f31efa72e8b76478 (from https://pypi.org/simple/dora-search/) (requires-python:>=3.7.0). Requested dora-search from https://files.pythonhosted.org/packages/b4/23/a032df818739bd4aad501f7cec5074a76842baa453902ebf3723a9915efd/dora_search-0.1.5.tar.gz#sha256=d9786a85ed1caac4f774a6b35e5b657498533b91e70a4762f31efa72e8b76478 (from demucs) has different version in metadata: '0.1.5'
  Using cached dora_search-0.1.4.tar.gz (101 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
WARNING: Discarding https://files.pythonhosted.org/packages/fb/2b/c835162bf552fdbf220d413b2ba8fcefff9916644dd0dd41645954c12c45/dora_search-0.1.4.tar.gz#sha256=67230a6bfa17182387909ec3fa6fcdcffb2514f7c4a9fe44db77eaf07d5dacac (from https://pypi.org/simple/dora-search/) (requires-python:>=3.7.0). Requested dora-search from https://files.pythonhosted.org/packages/fb/2b/c835162bf552fdbf220d413b2ba8fcefff9916644dd0dd41645954c12c45/dora_search-0.1.4.tar.gz#sha256=67230a6bfa17182387909ec3fa6fcdcffb2514f7c4a9fe44db77eaf07d5dacac (from demucs) has different version in metadata: '0.1.4'
Collecting demucs
  Using cached demucs-3.0.3.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/17/24/3b75e03243651603b95d8dbdb99eba104a464d3e8ca26d1ad54d95a985c5/demucs-3.0.3.tar.gz#sha256=c779a75537088bef53e96d67c5a999b5a9189d82ea78d9440df718ba3a318308 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/17/24/3b75e03243651603b95d8dbdb99eba104a464d3e8ca26d1ad54d95a985c5/demucs-3.0.3.tar.gz#sha256=c779a75537088bef53e96d67c5a999b5a9189d82ea78d9440df718ba3a318308 has different version in metadata: '3.0.3'
  Using cached demucs-3.0.2.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/6b/ed/61e40fe1d1b43507d2d4d5981711d556504bab18876c2474ae5e0751e9e3/demucs-3.0.2.tar.gz#sha256=757dd6a5cdbf548f33940f9b5838f3187f1711c58ef25f3c2f08bcd51de1e7a7 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/6b/ed/61e40fe1d1b43507d2d4d5981711d556504bab18876c2474ae5e0751e9e3/demucs-3.0.2.tar.gz#sha256=757dd6a5cdbf548f33940f9b5838f3187f1711c58ef25f3c2f08bcd51de1e7a7 has different version in metadata: '3.0.2'
  Using cached demucs-3.0.1.tar.gz (1.5 MB)
WARNING: Discarding https://files.pythonhosted.org/packages/5b/93/8a96140c92b11f7928008187a37b4378129510be0d1dcdcb289ddfe258f3/demucs-3.0.1.tar.gz#sha256=54c4897bbce99e043137199ec9373f4447e3e88fc3f8c5ade2409a51c7f9ae86 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/5b/93/8a96140c92b11f7928008187a37b4378129510be0d1dcdcb289ddfe258f3/demucs-3.0.1.tar.gz#sha256=54c4897bbce99e043137199ec9373f4447e3e88fc3f8c5ade2409a51c7f9ae86 has different version in metadata: '3.0.1'
  Using cached demucs-3.0.0.tar.gz (1.5 MB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-hwzko_c4
         cwd: /tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/
    Complete output (7 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/setup.py", line 39, in <module>
        REQUIRED = load_requirements('requirements_minimal.txt')
      File "/tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/setup.py", line 34, in load_requirements
        required = [i.strip() for i in open(HERE / name)]
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-zh8yzpmd/demucs_bf4ce312908b458e94cd8161c43c166b/requirements_minimal.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/5b/a5/d29ca8f45f1d6dc814d595b9874cb209d45e97c1bbfb41c48968be2e1231/demucs-3.0.0.tar.gz#sha256=d91beb476dfec0362a531a935429f429f3f8dae0d0772da3efb4fad73e9116d2 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
  Using cached demucs-2.0.3.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/48/91/c6594847bc3ab99597f58acdb99c022cfe1d6027353e695778dd90301128/demucs-2.0.3.tar.gz#sha256=f7a8c0cdc9be24d7d8d0e826e64e5ea1cd7a7aa8a3032fe786b932fd7b4ffcce (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/48/91/c6594847bc3ab99597f58acdb99c022cfe1d6027353e695778dd90301128/demucs-2.0.3.tar.gz#sha256=f7a8c0cdc9be24d7d8d0e826e64e5ea1cd7a7aa8a3032fe786b932fd7b4ffcce has different version in metadata: '2.0.3'
  Using cached demucs-2.0.2.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/ee/8b/8f3246b5b21cc137c02aeaf9cbeff2a6d1f65aafdb325f11aecc13ba07c3/demucs-2.0.2.tar.gz#sha256=0ca2ee067604915265db990b231fa9ad56c75bf51c12df0c4cec611f31f03bc2 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/ee/8b/8f3246b5b21cc137c02aeaf9cbeff2a6d1f65aafdb325f11aecc13ba07c3/demucs-2.0.2.tar.gz#sha256=0ca2ee067604915265db990b231fa9ad56c75bf51c12df0c4cec611f31f03bc2 has different version in metadata: '2.0.2'
  Using cached demucs-2.0.1.tar.gz (51 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/3b/37/5e853b339c193ce4d6bf47f1c1766ee938c1976eedec0ff9461d9c0b8e10/demucs-2.0.1.tar.gz#sha256=82448b6a57854150f793da407df41dc14102b2923682a10a4457765ea086501b (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/3b/37/5e853b339c193ce4d6bf47f1c1766ee938c1976eedec0ff9461d9c0b8e10/demucs-2.0.1.tar.gz#sha256=82448b6a57854150f793da407df41dc14102b2923682a10a4457765ea086501b has different version in metadata: '2.0.1'
  Using cached demucs-2.0.0.tar.gz (45 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/80/77/4991edb8d4764892260a913048ee607b50da520c4638f2c824ce1bdbe30e/demucs-2.0.0.tar.gz#sha256=a7dac70f14c03163739ba3da59028aae889548c0f6f9f9780b8fa8e43b319b99 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/80/77/4991edb8d4764892260a913048ee607b50da520c4638f2c824ce1bdbe30e/demucs-2.0.0.tar.gz#sha256=a7dac70f14c03163739ba3da59028aae889548c0f6f9f9780b8fa8e43b319b99 has different version in metadata: '2.0.0'
  Using cached demucs-0.0.2.tar.gz (45 kB)
WARNING: Discarding https://files.pythonhosted.org/packages/45/01/b59d89dc34a990ebe5ef66880ca43ec408c31f0a7689975367fd9e52592f/demucs-0.0.2.tar.gz#sha256=4914357489d0d1652f256972c73d385dfee0529c545a8547b139ac88956353e8 (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Requested demucs from https://files.pythonhosted.org/packages/45/01/b59d89dc34a990ebe5ef66880ca43ec408c31f0a7689975367fd9e52592f/demucs-0.0.2.tar.gz#sha256=4914357489d0d1652f256972c73d385dfee0529c545a8547b139ac88956353e8 has different version in metadata: '0.0.2'
  Using cached demucs-0.0.1.tar.gz (45 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zh8yzpmd/demucs_135238bfc8944b188403cccf243f8480/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zh8yzpmd/demucs_135238bfc8944b188403cccf243f8480/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-r2kbf09b
         cwd: /tmp/pip-install-zh8yzpmd/demucs_135238bfc8944b188403cccf243f8480/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-zh8yzpmd/demucs_135238bfc8944b188403cccf243f8480/setup.py", line 25, in <module>
        REQUIRED = [i.strip() for i in open(HERE / "requirements.txt")]
    FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-install-zh8yzpmd/demucs_135238bfc8944b188403cccf243f8480/requirements.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/f0/0b/ebb129e8724e8822e8f94e231118109f73b4a77ff76d47142e0fced854d7/demucs-0.0.1.tar.gz#sha256=76841228f4befedd0e94387c0a0f03e0b3ab8aacf40001a8f4b062b28160535d (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
  Using cached demucs-0.0.0.tar.gz (1.5 kB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-zh8yzpmd/demucs_372830ede72545b2a766db13a9ce62ed/setup.py'"'"'; __file__='"'"'/tmp/pip-install-zh8yzpmd/demucs_372830ede72545b2a766db13a9ce62ed/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-1_r7r2st
         cwd: /tmp/pip-install-zh8yzpmd/demucs_372830ede72545b2a766db13a9ce62ed/
    Complete output (5 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-zh8yzpmd/demucs_372830ede72545b2a766db13a9ce62ed/setup.py", line 19, in <module>
        REQUIRED = [i.strip() for i in open("requirements.txt")]
    FileNotFoundError: [Errno 2] No such file or directory: 'requirements.txt'
    ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/80/04/5d0473a2e1261c3789ff6083febb5f797776a42dbbe069691b9cc73c9f10/demucs-0.0.0.tar.gz#sha256=8050de572ca5806244a28130b71b81d2542a02ebb91f37ff727becd7eb03debf (from https://pypi.org/simple/demucs/) (requires-python:>=3.7.0). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement dora-search (from demucs)
ERROR: No matching distribution found for dora-search

[Enverex]

I logged a ticket there (facebookresearch/dora#18) then realised you're a contributor of that repo so that was probably redundant, lol.

[adefossez]

The core issue is actually that torch is not available on python 3.10 at the moment, pip install torch fails for me.

Honestly for deep learning tools, you shouldn't expect being able to use bleeding edge versions of Python. It always takes a bit of time for all the frameworks to adapt, and I know I personally stopped at 3.8 to avoid running into those issues. Things like Google Colab are typically running quite old versions of Python (e.g. 3.8) and sticking to that one means I'm sure I can ship to Colab easily.

[adefossez]

See PyTorch task: pytorch/pytorch#66424 (comment)

[Marviel]

Unfortunately even when running with python 3.9 inside Docker on a Mac M1, this is still happening.

I believe this is also an issue with running Demucs in a Docker container on Mac M1 machines , because lameenc does not have an arm version deployed for linux

I could also have traced my errors wrong. It doesn't appear that pytorch has an arm64 build available on linux either so....

[IvanIVGrozny]

I found a way to get demucs to install on Python 3.10 and 3.11

First, install FFmpeg:

python -m pip install ffmpeg

Then, install pytorch this way:

CPU: python -m pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/test/cpu
CUDA 11.7: python -m pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/test/cu117
CUDA 11.8: python -m pip install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/test/cu118
ROCM 5.4: python -m pip install torch torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/test/rocm5.4/

Next, install SoundFile:

python -m pip install soundfile

EDIT: forgot to mention you have to install Sox on Linux instead of SoundFile:

python -m pip install sox

Finally, install demucs this way: (thank you @adefossez)

python -m pip install --use-deprecated legacy-resolver demucs

Everything should be installed and working fine. @Ma5onic can this be added to README.md?

[FelixNgFender]

For those using Poetry and WSL2 (Ubuntu):

FFmpeg:

poetry add ffmpeg

CUDA 11.8:

poetry source add --priority=explicit pytorch-gpu-src https://download.pytorch.org/whl/test/cu118

poetry add --source pytorch-gpu-src torch torchvision torchaudio

Sox:

poetry add sox

Demucs:

poetry add demucs

This works wonderfully, the GPU utilization always reaches 100% during separation.

[CarlGao4]

(Hasn't this issue been fixed?)

[FelixNgFender]

When I install demucs without any prior installations in a fresh virtual environment (WSL2, Ubuntu), it throws ValueError: libcublas.so.*[0-9] not found in the system path [a list of Python paths]