Cannot install with Python3.8

After unzipping mujoco in ~/.mujoco/ and installing bazel, pip install dm_control gives the following error:

Installing collected packages: dm-tree, dm-env, dm-control
    Running setup.py install for dm-tree ... error
    ERROR: Command errored out with exit status 1:
     command: /home/ludovic/.general_env/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-21tka1qj/dm-tree/setup.py'"'"'; __file__='"'"'/tmp/pip-install-21tka1qj/dm-tree/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ou4ug0ty/install-record.txt --single-version-externally-managed --compile --install-headers /home/ludovic/.general_env/include/site/python3.8/dm-tree
         cwd: /tmp/pip-install-21tka1qj/dm-tree/
    Complete output (37 lines):
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.8
    creating build/lib.linux-x86_64-3.8/tree
    copying tree/tree_test.py -> build/lib.linux-x86_64-3.8/tree
    copying tree/tree_benchmark.py -> build/lib.linux-x86_64-3.8/tree
    copying tree/__init__.py -> build/lib.linux-x86_64-3.8/tree
    running build_ext
    bazel build //tree:_tree --symlink_prefix=build/temp.linux-x86_64-3.8/bazel- --compilation_mode=opt
    Starting local Bazel server and connecting to it...
    Loading:
    Loading: 0 packages loaded
    Analyzing: target //tree:_tree (1 packages loaded, 0 targets configured)
    INFO: Analyzed target //tree:_tree (23 packages loaded, 286 targets configured).
    INFO: Found 1 target...
    [0 / 26] [Prepa] BazelWorkspaceStatusAction stable-status.txt
    ERROR: /tmp/pip-install-21tka1qj/dm-tree/tree/BUILD:27:1: C++ compilation of rule '//tree:_tree.so' failed (Exit 1) gcc failed: error executing command /usr/bin/gcc -U_FORTIFY_SOURCE -fstack-protector -Wall -Wunused-but-set-parameter -Wno-free-nonheap-object -fno-omit-frame-pointer -g0 -O2 '-D_FORTIFY_SOURCE=1' -DNDEBUG -ffunction-sections ... (remaining 47 argument(s) skipped)
    
    Use --sandbox_debug to see verbose messages from the sandbox
    In file included from external/python_headers/object.h:4,
                     from external/python_headers/pytime.h:6,
                     from external/python_headers/Python.h:85,
                     from ./tree/tree.h:19,
                     from tree/tree.cc:15:
    external/python_headers/pymem.h:142:13: fatal error: cpython/pymem.h: No such file or directory
      142 | #  include  "cpython/pymem.h"
          |             ^~~~~~~~~~~~~~~~~
    compilation terminated.
    Target //tree:_tree failed to build
    Use --verbose_failures to see the command lines of failed build steps.
    INFO: Elapsed time: 2.571s, Critical Path: 0.21s
    INFO: 1 process: 1 linux-sandbox.
    FAILED: Build did NOT complete successfully
    FAILED: Build did NOT complete successfully
    error: command 'bazel' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /home/ludovic/.general_env/bin/python -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-21tka1qj/dm-tree/setup.py'"'"'; __file__='"'"'/tmp/pip-install-21tka1qj/dm-tree/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ou4ug0ty/install-record.txt --single-version-externally-managed --compile --install-headers /home/ludovic/.general_env/include/site/python3.8/dm-tree Check the logs for full command output.

I am attempting to install with python3.8 (tried on archlinux and ubuntu), I tried the same procedure with python3.6 (redhat) and had no issue. I played around in the install files and I assume the problem comes from the installer not being able to find the relative include: cpython/<HEADER>.h (they do exist despite the No such file error).

In the example above, the problem comes from cpython/pymem.h but removing the dependency in the pymem.h file just moves the problem to another header file that depends on a file in cpython/.

I don’t really know the inner workings of the installer, it might be very easy to fix but I have no clue.

[yash31415]

Please update your pip sudo pip3.8 install --upgrade pip

developer : debu(dsrawat984)

[alimuldal]

OK, great - I’ll close this then. Hopefully this will become easier once dm-tree release wheels for Python 3.8, but there’s not much more we can do about it from our end.