# I have a problem with LFortran installation **URL:** \ **Category:** LFortran\ **Created:** [December 22, 2021, 6:48pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440 "2021-12-22T18:48:51Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 22, 2021, 6:48pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/1 "2021-12-22T18:48:51Z")
I have installed the LFORTRAN on WSL2 and I used conda environment to do that. Thus, after following all steps, when I tried to use these commands: ```auto cmake \ -DCMAKE_BUILD_TYPE=Debug \ -DWITH_LLVM=yes \ -DWITH_XEUS=yes \ -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ . cmake --build . -j4 --target install ``` I got this: ```auto rg@JDP6JR9I:/mnt/c/Users/RG/lfortran-0.14.0$ cmake \ > -DCMAKE_BUILD_TYPE=Debug \ > -DWITH_LLVM=yes \ > -DWITH_XEUS=yes \ > -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ > -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ > . -- Found LLVM 11.1.0 -- Using LLVMConfig.cmake in: /home/rg/miniconda3/envs/lf/lib/cmake/llvm Configuration results --------------------- LFORTRAN_VERSION: 0.14.0 CPACK_PACKAGE_FILE_NAME: lfortran-0.14.0-Linux C compiler : /usr/bin/cc C++ compiler : /usr/bin/c++ Build type: Debug C compiler flags : -g C++ compiler flags : -Wall -Wextra -g -ggdb Installation prefix: /home/rg/miniconda3 WITH_LFORTRAN_ASSERT: no LFORTRAN_STATIC_BIN: no WITH_STACKTRACE: no WITH_UNWIND: no WITH_BFD: no WITH_DWARFDUMP: no WITH_LINKH: no WITH_MACHO: no HAVE_LFORTRAN_DEMANGLE: yes WITH_LLVM: yes WITH_XEUS: yes WITH_JSON: no WITH_FMT: no WITH_LFORTRAN_BINARY_MODFILES: YES WITH_RUNTIME_LIBRARY: YES WITH_TARGET_AARCH64: no WITH_TARGET_X86: yes -- Configuring done -- Generating done -- Build files have been written to: /mnt/c/Users/RG/lfortran-0.14.0 (base) rg@-JDP6JR9I:/mnt/c/Users/RG/lfortran-0.14.0$ cmake --build . -j4 --target install [4%] Built target lfortran_runtime_static [4%] Built target lfortran_runtime [6%] Built target doctest [8%] Building CXX object src/lfortran/CMakeFiles/lfortran_lib.dir/fortran_kernel.cpp.o /mnt/c/Users/RG/lfortran-0.14.0/src/lfortran/fortran_kernel.cpp: In function ‘int LFortran::run_kernel(const string&)’: /mnt/c/Users/RG/lfortran-0.14.0/src/lfortran/fortran_kernel.cpp:419:83: error: no matching function for call to ‘xeus::xkernel::xkernel(xeus::xconfiguration&, std::string, std::remove_reference&>::type)’ 419 | xeus::xkernel kernel(config, xeus::get_user_name(), std::move(interpreter)); | ^ In file included from /mnt/c/Users/RG/lfortran-0.14.0/src/lfortran/fortran_kernel.cpp:18: /home/rg/miniconda3/envs/lf/include/xeus/xkernel.hpp:62:9: note: candidate: ‘xeus::xkernel::xkernel(const string&, xeus::xkernel::context_ptr, xeus::xkernel::interpreter_ptr, xeus::xkernel::server_builder, xeus::xkernel::history_manager_ptr, xeus::xkernel::logger_ptr, xeus::xkernel::debugger_builder, nlohmann::json, nlohmann::basic_json<>::error_handler_t)’ 62 | xkernel(const std::string& user_name, | ^ ~~~~~~ /home/rg/miniconda3/envs/lf/include/xeus/xkernel.hpp:62:9: note: candidate expects 9 arguments, 3 provided /home/rg/miniconda3/envs/lf/include/xeus/xkernel.hpp:51:9: note: candidate: ‘xeus::xkernel::xkernel(const xeus::xconfiguration&, const string&, xeus::xkernel::context_ptr, xeus::xkernel::interpreter_ptr, xeus::xkernel::server_builder, xeus::xkernel::history_manager_ptr, xeus::xkernel::logger_ptr, xeus::xkernel::debugger_builder, nlohmann::json, nlohmann::basic_json<>::error_handler_t)’ 51 | xkernel(const xconfiguration& config, | ^ ~~~~~~ /home/rg/miniconda3/envs/lf/include/xeus/xkernel.hpp:51:9: note: candidate expects 10 arguments, 3 provided make[2]: *** [src/lfortran/CMakeFiles/lfortran_lib.dir/build.make:531: src/lfortran/CMakeFiles/lfortran_lib.dir/fortran_kernel.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:334: src/lfortran/CMakeFiles/lfortran_lib.dir/all] Error 2 make: *** [Makefile:163: all] Error 2 ``` and with this command: `jupyter kernelspec list --json` I got this: ```auto { "kernelspecs": { "python3": { "resource_dir": "/home/rg/.local/share/jupyter/kernels/python3", "spec": { "argv": [ "python", "-m", "ipykernel_launcher", "-f", "{connection_file}" ], "env": {}, "display_name": "Python 3 (ipykernel)", "language": "python", "interrupt_mode": "signal", "metadata": { "debugger": true } } } } } ``` I would appreciate it if anyone could help me with this. I am quite a beginner in these environments. ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 22, 2021, 7:56pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/2 "2021-12-22T19:56:22Z")
Hi @Reza, welcome to the forum! We have to update our documentation ([Installation - LFortran Documentation](https://docs.lfortran.org/installation/)) to specify the exact versions of the dependencies. Can you do this: ```auto conda install xeus=1.0.1 ``` This should downgrade the xeus package from version 2 to version 1. Then LFortran should build and the other commands will also work. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 23, 2021, 4:12pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/3 "2021-12-23T16:12:03Z")
Thank you very much. I downgraded the xeus to version 1.0.1 and this time the cmake command worked well. ```auto Install the project... -- Install configuration: "Debug" -- Up-to-date: /home/rg/miniconda3/envs/lf/share/jupyter/kernels -- Up-to-date: /home/rg/miniconda3/envs/lf/share/jupyter/kernels/fortran -- Up-to-date: /home/rg/miniconda3/envs/lf/share/jupyter/kernels/fortran/kernel.json -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_array.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_kind.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_iso_fortran_env.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_iso_c_binding.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_math2.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_math.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_trig.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_sin.mod -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/lfortran_intrinsic_string.mod -- Installing: /home/rg/miniconda3/envs/lf/bin/lfortran -- Set runtime path of "/home/rg/miniconda3/envs/lf/bin/lfortran" to "/home/rg/miniconda3/envs/lf/lib" -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/liblfortran_runtime.so -- Installing: /home/rg/miniconda3/envs/lf/share/lfortran/lib/liblfortran_runtime_static.a ``` and now I have: ```auto (lf) rg@a:/mnt/c/Users/RG/lfortran-0.14.0$ jupyter kernelspec list --json { "kernelspecs": { "python3": { "resource_dir": "/home/rg/.local/share/jupyter/kernels/python3", "spec": { "argv": [ "python", "-m", "ipykernel_launcher", "-f", "{connection_file}" ], "env": {}, "display_name": "Python 3 (ipykernel)", "language": "python", "interrupt_mode": "signal", "metadata": { "debugger": true } } }, "fortran": { "resource_dir": "/home/rg/miniconda3/envs/lf/share/jupyter/kernels/fortran", "spec": { "argv": [ "/home/rg/miniconda3/envs/lf/bin/lfortran", "kernel", "-f", "{connection_file}" ], "env": {}, "display_name": "Fortran", "language": "fortran", "interrupt_mode": "signal", "metadata": {} } } } ``` However, when I run the Jupyter lab, there is no IFORTRAN Kernel in it. Also, when I run the following command: ```auto jupyter console --kernel=fortran ``` I get this: ```auto rg@I:/mnt/c/Users/RG$ jupyter console --kernel=fortran Run with XEUS 1.0.1 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for FortranTraceback (most recent call last): File "/home/rg/miniconda3/envs/lf/bin/jupyter-console", line 10, in sys.exit(main()) File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_core/application.py", line 264, in launch_instance return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs) File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/traitlets/config/application.py", line 846, in launch_instance app.start() File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_console/app.py", line 148, in start self.shell.mainloop() File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_console/ptshell.py", line 664, in mainloop main_task = asyncio.wait(tasks, loop=loop, return_when=asyncio.FIRST_COMPLETED) TypeError: wait() got an unexpected keyword argument 'loop' sys:1: RuntimeWarning: coroutine 'ZMQTerminalInteractiveShell.interact' was never awaited ``` I don’t know whether it is a problem with jupyter or anything else. ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 23, 2021, 5:44pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/4 "2021-12-23T17:44:31Z")
It seems LFortran installed correctly and you can see the `fortran` kernel in the JSON `kernelspec`. The Python exception that you see also seems unrelated to LFortran. Can you try: ```auto jupyter console --kernel=python3 ``` and see if it works? ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 23, 2021, 6:28pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/5 "2021-12-23T18:28:59Z")
It returns same error : ```auto jupyter console --kernel=python3 Python 3.10.1 | packaged by conda-forge | (main, Dec 22 2021, 01:39:05) [GCC 9.4.0] Type 'copyright', 'credits' or 'license' for more information IPython 7.30.1 -- An enhanced Interactive Python. Type '?' for help. Traceback (most recent call last): File "/home/rg/miniconda3/envs/lf/bin/jupyter-console", line 10, in sys.exit(main()) File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_core/application.py", line 264, in launch_instance return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs) File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/traitlets/config/application.py", line 846, in launch_instance app.start() File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_console/app.py", line 148, in start self.shell.mainloop() File "/home/rg/miniconda3/envs/lf/lib/python3.10/site-packages/jupyter_console/ptshell.py", line 664, in mainloop main_task = asyncio.wait(tasks, loop=loop, return_when=asyncio.FIRST_COMPLETED) TypeError: wait() got an unexpected keyword argument 'loop' sys:1: RuntimeWarning: coroutine 'ZMQTerminalInteractiveShell.interact' was never awaited ``` However, I already have ipython3 kernel on my jupyter and it works fine. ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 23, 2021, 7:08pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/6 "2021-12-23T19:08:13Z")
The error looks like is due to this: [python - What are all these deprecated "loop" parameters in asyncio? - Stack Overflow](https://stackoverflow.com/questions/60312374/what-are-all-these-deprecated-loop-parameters-in-asyncio). Can you downgrade Python to 3.9? That should fix it. Update: here is the upstream issue for this bug: [asyncio.wait() no longer accepts the loop keyword in Python 3.10 · Issue #245 · jupyter/jupyter\_console · GitHub](https://github.com/jupyter/jupyter_console/issues/245) Note: it’s surprising that Python is backwards incompatible like this. They removed the `loop` argument because it simplifies the API or becomes redundant or something, but it breaks people’s codes… ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 23, 2021, 8:17pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/7 "2021-12-23T20:17:22Z")
So after testing everything, here are the results: I was successful in installing and running LFORTRAN using the following commands: First of all, I removed Jupyter and all dependencies from both -conda env- and Linux root. Then, I installed the LFORTRAN by the document on the [website](https://docs.lfortran.org/installation/). ```auto wget https://lfortran.github.io/tarballs/dev/lfortran-0.14.0.tar.gz tar xzf lfortran-0.14.0.tar.gz cd lfortran-0.14.0 ``` And build: ```auto cmake -DWITH_LLVM=yes -DCMAKE_INSTALL_PREFIX=`pwd`/inst . make -j8 make install ``` and then run it by: ```auto ./src/bin/lfortran ``` It worked fine and I was able to do some coding with Fortran. Then I decided to enable Jupyter kernel. So I installed it using conda-forge and I run this command: ```auto cmake \ -DCMAKE_BUILD_TYPE=Debug \ -DWITH_LLVM=yes \ -DWITH_XEUS=yes \ -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ . cmake --build . -j4 --target install ``` In order to do that I had to go to the lfortran-0.14.0 directory since it needs a CMakeLists. Finaly, I installed Jupyter lab. At this point by runing this commad: ```auto jupyter console --kernel=fortran ``` I got: ```auto (base) rg@9I:/mnt/c/Users/RG$ jupyter console --kernel=fortran /home/rg/miniconda3/bin/lfortran: /home/rg/miniconda3/lib/libtinfo.so.6: no version information available (required by /home/rg/miniconda3/bin/lfortran) Run with XEUS 1.0.1 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for Fortran In [1]: ``` and the following error: ```auto In [1]: print /home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py:852: RuntimeWarning: coroutine 'ZMQSocketChannel.msg_ready' was never awaited while self.client.iopub_channel.msg_ready(): RuntimeWarning: Enable tracemalloc to get the object allocation traceback Unhandled exception in event loop: File "/home/rg/miniconda3/lib/python3.9/asyncio/events.py", line 80, in _run self._context.run(self._callback, *self._args) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper callback() File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input self.key_processor.process_keys() File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 271, in process_keys self._process_coroutine.send(key_press) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 186, in _process self._call_handler(matches[-1], key_sequence=buffer[:]) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 321, in _call_handler handler.call(event) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_bindings.py", line 124, in call result = self.handler(event) File "/home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 475, in _ self.handle_iopub() File "/home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 854, in handle_iopub msg_type = sub_msg['header']['msg_type'] Exception 'coroutine' object is not subscriptable Press ENTER to continue... ``` At this point, I was not able to use ./src/bin/lfortran anymore. I also tried to downgrade the python but it didn’t change anything. All in all, it is good to have an Interactive Fortran. But as an engineer it is a bit complicated to even install it 😅 😅 . I hope someday we could have it as convenient as python on all platforms or even on VSCOD. Thank you very much for what you are doing and also for your help. ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 23, 2021, 9:32pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/8 "2021-12-23T21:32:12Z")
The error that you are getting (`Exception 'coroutine' object is not subscriptable`) seems to be coming from Jupyter. Unfortunately that has been my experience with Python that you get these runtime errors if some package or Python versions do not align and it’s incredibly frustrating, at least to me. I can’t tell if this is somehow caused by the LFortran kernel or not. > At this point, I was not able to use ./src/bin/lfortran anymore. What error do you get? I’ll be happy to fix this if you give me more information. I was able to reproduce your Python error with this on my Apple M1: ```auto conda create -n lf2 -c conda-forge lfortran jupyter python=3.9 conda activate lf2 jupyter console --kernel="fortran" ``` and then in the Jupyter console: ```auto In [1]: 4+4/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/jupyter_console/ptshell.py:852: RuntimeWarning: coroutine 'ZMQSocketChannel.msg_ready' was never awaited while self.client.iopub_channel.msg_ready(): RuntimeWarning: Enable tracemalloc to get the object allocation traceback Unhandled exception in event loop: File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/asyncio/events.py", line 80, in _run self._context.run(self._callback, *self._args) File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper callback() File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input self.key_processor.process_keys() File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 271, in process_keys self._process_coroutine.send(key_press) File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 186, in _process self._call_handler(matches[-1], key_sequence=buffer[:]) File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 321, in _call_handler handler.call(event) File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_bindings.py", line 124, in call result = self.handler(event) File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 475, in _ self.handle_iopub() File "/Users/ondrej/mambaforge/envs/lf2/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 854, in handle_iopub msg_type = sub_msg['header']['msg_type'] Exception 'coroutine' object is not subscriptable ``` That seems to be the same problem. I haven’t seen this error before, thanks for reporting it. I reported it upstream at: [jupyter's python3 kernel seems to fail with Python 3.9 and 3.10 (Exception 'coroutine' object is not subscriptable) · Issue #23 · conda-forge/jupyter-feedstock · GitHub](https://github.com/conda-forge/jupyter-feedstock/issues/23) ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 23, 2021, 9:35pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/9 "2021-12-23T21:35:43Z")
@Reza can you please try this: ```auto conda create -n lf3 -c conda-forge lfortran jupyter python=3.8 conda activate lf3 jupyter console --kernel="fortran" ``` That works for me. There seems to be a bug in Jupyter with Python 3.8 and 3.9 in Conda, see my previous message where I reported it upstream. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 23, 2021, 10:28pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/10 "2021-12-23T22:28:22Z")
For: ```auto ./src/bin/lfortran ``` I am getting: ```auto -bash: ./src/bin/lfortran: No such file or directory ``` That I believe, the reason is that at the first step, I installed LFORTRAN from a (Source Tarball) and then I used this command in the LFORTRAN-0.14.0 directory: ```auto cmake \ -DCMAKE_BUILD_TYPE=Debug \ -DWITH_LLVM=yes \ -DWITH_XEUS=yes \ -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ . cmake --build . -j4 --target install ``` So now, if I run conda\_list\_command I get: ```auto (base) rg@JR9I:/mnt/c/Users/RG$ conda list # packages in environment at /home/rg/miniconda3: # # Name Version Build Channel _libgcc_mutex 0.1 conda_forge conda-forge _openmp_mutex 4.5 1_llvm conda-forge argon2-cffi 21.1.0 py39h3811e60_2 conda-forge async_generator 1.10 py_0 conda-forge attrs 21.2.0 pyhd8ed1ab_0 conda-forge backcall 0.2.0 pyh9f0ad1d_0 conda-forge backports 1.0 py_2 conda-forge backports.functools_lru_cache 1.6.4 pyhd8ed1ab_0 conda-forge blas 1.0 mkl bleach 4.1.0 pyhd8ed1ab_0 conda-forge brotlipy 0.7.0 py39h27cfd23_1003 bzip2 1.0.8 h7b6447c_0 c-ares 1.17.1 h27cfd23_0 ca-certificates 2021.10.26 h06a4308_2 certifi 2021.10.8 py39h06a4308_0 cffi 1.14.6 py39h400218f_0 charset-normalizer 2.0.4 pyhd3eb1b0_0 conda 4.11.0 py39h06a4308_0 conda-package-handling 1.7.3 py39h27cfd23_1 cppzmq 4.7.1 hf7cf922_2 conda-forge cryptography 36.0.0 py39h9ce1e76_0 dbus 1.13.6 he372182_0 conda-forge debugpy 1.5.1 py39he80948d_0 conda-forge decorator 5.1.0 pyhd8ed1ab_0 conda-forge defusedxml 0.7.1 pyhd8ed1ab_0 conda-forge entrypoints 0.3 pyhd8ed1ab_1003 conda-forge expat 2.4.2 h9c3ff4c_0 conda-forge fontconfig 2.13.1 hba837de_1005 conda-forge freetype 2.10.4 h0708190_1 conda-forge glib 2.69.1 h5202010_0 gst-plugins-base 1.14.0 hbbd80ab_1 gstreamer 1.14.0 h28cd5cc_2 icu 58.2 he6710b0_3 idna 3.3 pyhd3eb1b0_0 importlib-metadata 4.10.0 py39hf3d152e_0 conda-forge importlib_resources 5.4.0 pyhd8ed1ab_0 conda-forge intel-openmp 2021.4.0 h06a4308_3561 ipykernel 6.6.0 py39hef51801_0 conda-forge ipython 7.30.1 py39hf3d152e_0 conda-forge ipython_genutils 0.2.0 py_1 conda-forge ipywidgets 7.6.5 pyhd8ed1ab_0 conda-forge jdatetime 3.7.0 pyhd8ed1ab_0 conda-forge jedi 0.18.1 py39hf3d152e_0 conda-forge jinja2 3.0.3 pyhd8ed1ab_0 conda-forge jpeg 9d h36c2ea0_0 conda-forge jsonschema 4.3.2 pyhd8ed1ab_0 conda-forge jupyter 1.0.0 py39hf3d152e_7 conda-forge jupyter_client 7.1.0 pyhd8ed1ab_0 conda-forge jupyter_console 6.4.0 pyhd8ed1ab_0 conda-forge jupyter_core 4.9.1 py39hf3d152e_1 conda-forge jupyterlab_pygments 0.1.2 pyh9f0ad1d_0 conda-forge jupyterlab_widgets 1.0.2 pyhd8ed1ab_0 conda-forge krb5 1.19.2 hac12032_0 ld_impl_linux-64 2.35.1 h7274673_9 libarchive 3.5.2 hccf745f_1 conda-forge libcurl 7.80.0 h0b77cf5_0 libedit 3.1.20210910 h7f8727e_0 libev 4.33 h7f8727e_1 libffi 3.3 he6710b0_2 libgcc-ng 11.2.0 h1d223b6_11 conda-forge libiconv 1.16 h516909a_0 conda-forge libllvm11 11.1.0 h3826bc1_0 libmamba 0.19.1 h3985d26_0 conda-forge libmambapy 0.19.1 py39h8bfa403_0 conda-forge libnghttp2 1.46.0 hce63b2e_0 libpng 1.6.37 h21135ba_2 conda-forge libsodium 1.0.18 h7b6447c_0 libsolv 0.7.19 h780b84a_5 conda-forge libssh2 1.9.0 h1ba5d50_1 libstdcxx-ng 11.2.0 he4da1e4_11 conda-forge libuuid 2.32.1 h7f98852_1000 conda-forge libxcb 1.13 h7f98852_1004 conda-forge libxml2 2.9.12 h03d6c58_0 llvm 11.1.0 h06a4308_0 llvm-openmp 12.0.1 h4bd325d_1 conda-forge lz4-c 1.9.3 h295c915_1 lzo 2.10 h7b6447c_2 mamba 0.19.1 py39hfa8f2c8_0 conda-forge markupsafe 2.0.1 py39h3811e60_1 conda-forge matplotlib-inline 0.1.3 pyhd8ed1ab_0 conda-forge mistune 0.8.4 py39h3811e60_1005 conda-forge mkl 2021.4.0 h06a4308_640 mkl-service 2.4.0 py39h7f8727e_0 mkl_fft 1.3.1 py39hd3c417c_0 mkl_random 1.2.2 py39h51133e4_0 nbclient 0.5.9 pyhd8ed1ab_0 conda-forge nbconvert 6.3.0 py39hf3d152e_1 conda-forge nbformat 5.1.3 pyhd8ed1ab_0 conda-forge ncurses 6.3 h7f8727e_2 nest-asyncio 1.5.4 pyhd8ed1ab_0 conda-forge nlohmann_json 3.9.1 h9c3ff4c_1 conda-forge notebook 6.4.6 pyha770c72_0 conda-forge numpy 1.21.2 py39h20f2e39_0 numpy-base 1.21.2 py39h79a1101_0 openssl 1.1.1l h7f8727e_0 packaging 21.3 pyhd8ed1ab_0 conda-forge pandoc 2.16.2 h7f98852_0 conda-forge pandocfilters 1.5.0 pyhd8ed1ab_0 conda-forge parso 0.8.3 pyhd8ed1ab_0 conda-forge pcre 8.45 h9c3ff4c_0 conda-forge pexpect 4.8.0 pyh9f0ad1d_2 conda-forge pickleshare 0.7.5 py_1003 conda-forge pip 21.2.4 py39h06a4308_0 pip-autoremove 0.10.0 pypi_0 pypi prometheus_client 0.12.0 pyhd8ed1ab_0 conda-forge prompt-toolkit 3.0.24 pyha770c72_0 conda-forge prompt_toolkit 3.0.24 hd8ed1ab_0 conda-forge pthread-stubs 0.4 h36c2ea0_1001 conda-forge ptyprocess 0.7.0 pyhd3deb0d_0 conda-forge pybind11-abi 4 hd8ed1ab_3 conda-forge pycosat 0.6.3 py39h27cfd23_0 pycparser 2.21 pyhd3eb1b0_0 pygments 2.10.0 pyhd8ed1ab_0 conda-forge pyopenssl 21.0.0 pyhd3eb1b0_1 pyparsing 3.0.6 pyhd8ed1ab_0 conda-forge pyqt 5.9.2 py39h2531618_6 pyrsistent 0.18.0 py39h3811e60_0 conda-forge pysocks 1.7.1 py39h06a4308_0 python 3.9.7 h12debd9_1 python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge python_abi 3.9 2_cp39 conda-forge pyzmq 22.3.0 py39h37b5a0c_1 conda-forge qt 5.9.7 h5867ecd_1 qtconsole 5.2.2 pyhd8ed1ab_0 conda-forge qtpy 2.0.0 pyhd8ed1ab_0 conda-forge readline 8.1 h27cfd23_0 reproc 14.2.3 h7f98852_0 conda-forge reproc-cpp 14.2.3 h9c3ff4c_0 conda-forge requests 2.26.0 pyhd3eb1b0_0 ruamel_yaml 0.15.100 py39h27cfd23_0 send2trash 1.8.0 pyhd8ed1ab_0 conda-forge setuptools 58.0.4 py39h06a4308_0 sip 4.19.13 py39h2531618_0 six 1.16.0 pyhd3eb1b0_0 sqlite 3.36.0 hc218d9a_0 terminado 0.12.1 py39hf3d152e_1 conda-forge testpath 0.5.0 pyhd8ed1ab_0 conda-forge tk 8.6.11 h1ccaba5_0 tornado 6.1 py39h3811e60_2 conda-forge tqdm 4.62.3 pyhd3eb1b0_1 traitlets 5.1.1 pyhd8ed1ab_0 conda-forge tzdata 2021e hda174b7_0 urllib3 1.26.7 pyhd3eb1b0_0 wcwidth 0.2.5 pyh9f0ad1d_2 conda-forge webencodings 0.5.1 py_1 conda-forge wheel 0.37.0 pyhd3eb1b0_1 widgetsnbextension 3.5.2 py39hf3d152e_1 conda-forge xeus 1.0.1 h7d0c39e_2 conda-forge xorg-libxau 1.0.9 h7f98852_0 conda-forge xorg-libxdmcp 1.1.3 h7f98852_0 conda-forge xtl 0.7.4 h4bd325d_0 conda-forge xz 5.2.5 h7b6447c_0 yaml 0.2.5 h7b6447c_0 yaml-cpp 0.6.3 he1b5a44_4 conda-forge zeromq 4.3.4 h2531618_0 zipp 3.6.0 pyhd8ed1ab_0 conda-forge zlib 1.2.11 h7f8727e_4 zstd 1.5.0 ha4553b6_1 ``` and I can’t find LFORTRAN among packages. Meanwhile by running: ```auto jupyter kernelspec list --json ``` I have: ```auto { "kernelspecs": { "python3": { "resource_dir": "/home/rg/.local/share/jupyter/kernels/python3", "spec": { "argv": [ "python", "-m", "ipykernel_launcher", "-f", "{connection_file}" ], "env": {}, "display_name": "Python 3 (ipykernel)", "language": "python", "interrupt_mode": "signal", "metadata": { "debugger": true } } }, "fortran": { "resource_dir": "/home/rg/miniconda3/share/jupyter/kernels/fortran", "spec": { "argv": [ "/home/rg/miniconda3/bin/lfortran", "kernel", "-f", "{connection_file}" ], "env": {}, "display_name": "Fortran", "language": "fortran", "interrupt_mode": "signal", "metadata": {} } } } ``` and by: ```auto jupyter console --kernel=fortran ``` I have: ```auto jupyter console --kernel=fortran /home/rg/miniconda3/bin/lfortran: /home/rg/miniconda3/lib/libtinfo.so.6: no version information available (required by /home/rg/miniconda3/bin/lfortran) Run with XEUS 1.0.1 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for Fortran In [1]: ``` and same error: ```auto In [1]: print*,('reza'/home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py:852: RuntimeWarning: coroutine 'ZMQSocketChannel.msg_ready' was never awaited while self.client.iopub_channel.msg_ready(): RuntimeWarning: Enable tracemalloc to get the object allocation traceback Unhandled exception in event loop: File "/home/rg/miniconda3/lib/python3.9/asyncio/events.py", line 80, in _run self._context.run(self._callback, *self._args) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper callback() File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input self.key_processor.process_keys() File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 271, in process_keys self._process_coroutine.send(key_press) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 186, in _process self._call_handler(matches[-1], key_sequence=buffer[:]) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_processor.py", line 321, in _call_handler handler.call(event) File "/home/rg/miniconda3/lib/python3.9/site-packages/prompt_toolkit/key_binding/key_bindings.py", line 124, in call result = self.handler(event) File "/home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 475, in _ self.handle_iopub() File "/home/rg/miniconda3/lib/python3.9/site-packages/jupyter_console/ptshell.py", line 854, in handle_iopub msg_type = sub_msg['header']['msg_type'] Exception 'coroutine' object is not subscriptable Press ENTER to continue... ``` and any command leads to a terminal crash. So I think everything is corrupted now. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 23, 2021, 10:32pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/11 "2021-12-23T22:32:47Z")
I tested it, and it does not solve anything. Maybe I have to remove everything and start from scratch. ```auto (lf3) rg@9I:/mnt/c/Users/RG$ conda list # packages in environment at /home/rg/miniconda3/envs/lf3: # # Name Version Build Channel _libgcc_mutex 0.1 conda_forge conda-forge _openmp_mutex 4.5 1_gnu conda-forge alsa-lib 1.2.3 h516909a_0 conda-forge argon2-cffi 21.1.0 py38h497a2fe_2 conda-forge async_generator 1.10 py_0 conda-forge attrs 21.2.0 pyhd8ed1ab_0 conda-forge backcall 0.2.0 pyh9f0ad1d_0 conda-forge backports 1.0 py_2 conda-forge backports.functools_lru_cache 1.6.4 pyhd8ed1ab_0 conda-forge bleach 4.1.0 pyhd8ed1ab_0 conda-forge ca-certificates 2021.10.8 ha878542_0 conda-forge cffi 1.15.0 py38h3931269_0 conda-forge dbus 1.13.6 h5008d03_3 conda-forge debugpy 1.5.1 py38h709712a_0 conda-forge decorator 5.1.0 pyhd8ed1ab_0 conda-forge defusedxml 0.7.1 pyhd8ed1ab_0 conda-forge entrypoints 0.3 pyhd8ed1ab_1003 conda-forge expat 2.4.2 h9c3ff4c_0 conda-forge fontconfig 2.13.1 hba837de_1005 conda-forge freetype 2.10.4 h0708190_1 conda-forge gettext 0.19.8.1 h73d1719_1008 conda-forge gst-plugins-base 1.18.5 hf529b03_2 conda-forge gstreamer 1.18.5 h9f60fe5_2 conda-forge icu 68.2 h9c3ff4c_0 conda-forge importlib-metadata 4.10.0 py38h578d9bd_0 conda-forge importlib_resources 5.4.0 pyhd8ed1ab_0 conda-forge ipykernel 6.6.0 py38he5a9106_0 conda-forge ipython 7.30.1 py38h578d9bd_0 conda-forge ipython_genutils 0.2.0 py_1 conda-forge ipywidgets 7.6.5 pyhd8ed1ab_0 conda-forge jedi 0.18.1 py38h578d9bd_0 conda-forge jinja2 3.0.3 pyhd8ed1ab_0 conda-forge jpeg 9d h36c2ea0_0 conda-forge jsonschema 4.3.2 pyhd8ed1ab_0 conda-forge jupyter 1.0.0 py38h578d9bd_7 conda-forge jupyter_client 7.1.0 pyhd8ed1ab_0 conda-forge jupyter_console 6.4.0 pyhd8ed1ab_0 conda-forge jupyter_core 4.9.1 py38h578d9bd_1 conda-forge jupyterlab_pygments 0.1.2 pyh9f0ad1d_0 conda-forge jupyterlab_widgets 1.0.2 pyhd8ed1ab_0 conda-forge krb5 1.19.2 hcc1bbae_3 conda-forge ld_impl_linux-64 2.36.1 hea4e1c9_2 conda-forge lfortran 0.14.0 h780b84a_0 conda-forge libclang 11.1.0 default_ha53f305_1 conda-forge libedit 3.1.20191231 he28a2e2_2 conda-forge libevent 2.1.10 h9b69904_4 conda-forge libffi 3.4.2 h7f98852_5 conda-forge libgcc-ng 11.2.0 h1d223b6_11 conda-forge libglib 2.70.2 h174f98d_0 conda-forge libgomp 11.2.0 h1d223b6_11 conda-forge libiconv 1.16 h516909a_0 conda-forge libllvm11 11.1.0 hf817b99_2 conda-forge libnsl 2.0.0 h7f98852_0 conda-forge libogg 1.3.4 h7f98852_1 conda-forge libopus 1.3.1 h7f98852_1 conda-forge libpng 1.6.37 h21135ba_2 conda-forge libpq 13.5 hd57d9b9_1 conda-forge libsodium 1.0.18 h36c2ea0_1 conda-forge libstdcxx-ng 11.2.0 he4da1e4_11 conda-forge libuuid 2.32.1 h7f98852_1000 conda-forge libvorbis 1.3.7 h9c3ff4c_0 conda-forge libxcb 1.13 h7f98852_1004 conda-forge libxkbcommon 1.0.3 he3ba5ed_0 conda-forge libxml2 2.9.12 h72842e0_0 conda-forge libzlib 1.2.11 h36c2ea0_1013 conda-forge lz4-c 1.9.3 h9c3ff4c_1 conda-forge markupsafe 2.0.1 py38h497a2fe_1 conda-forge matplotlib-inline 0.1.3 pyhd8ed1ab_0 conda-forge mistune 0.8.4 py38h497a2fe_1005 conda-forge mysql-common 8.0.27 ha770c72_3 conda-forge mysql-libs 8.0.27 hfa10184_3 conda-forge nbclient 0.5.9 pyhd8ed1ab_0 conda-forge nbconvert 6.3.0 py38h578d9bd_1 conda-forge nbformat 5.1.3 pyhd8ed1ab_0 conda-forge ncurses 6.2 h58526e2_4 conda-forge nest-asyncio 1.5.4 pyhd8ed1ab_0 conda-forge notebook 6.4.6 pyha770c72_0 conda-forge nspr 4.32 h9c3ff4c_1 conda-forge nss 3.73 hb5efdd6_0 conda-forge openssl 1.1.1l h7f98852_0 conda-forge packaging 21.3 pyhd8ed1ab_0 conda-forge pandoc 2.16.2 h7f98852_0 conda-forge pandocfilters 1.5.0 pyhd8ed1ab_0 conda-forge parso 0.8.3 pyhd8ed1ab_0 conda-forge pcre 8.45 h9c3ff4c_0 conda-forge pexpect 4.8.0 pyh9f0ad1d_2 conda-forge pickleshare 0.7.5 py_1003 conda-forge pip 21.3.1 pyhd8ed1ab_0 conda-forge prometheus_client 0.12.0 pyhd8ed1ab_0 conda-forge prompt-toolkit 3.0.24 pyha770c72_0 conda-forge prompt_toolkit 3.0.24 hd8ed1ab_0 conda-forge pthread-stubs 0.4 h36c2ea0_1001 conda-forge ptyprocess 0.7.0 pyhd3deb0d_0 conda-forge pycparser 2.21 pyhd8ed1ab_0 conda-forge pygments 2.10.0 pyhd8ed1ab_0 conda-forge pyparsing 3.0.6 pyhd8ed1ab_0 conda-forge pyqt 5.12.3 py38h578d9bd_8 conda-forge pyqt-impl 5.12.3 py38h0ffb2e6_8 conda-forge pyqt5-sip 4.19.18 py38h709712a_8 conda-forge pyqtchart 5.12 py38h7400c14_8 conda-forge pyqtwebengine 5.12.1 py38h7400c14_8 conda-forge pyrsistent 0.18.0 py38h497a2fe_0 conda-forge python 3.8.12 hb7a2778_2_cpython conda-forge python-dateutil 2.8.2 pyhd8ed1ab_0 conda-forge python_abi 3.8 2_cp38 conda-forge pyzmq 22.3.0 py38h2035c66_1 conda-forge qt 5.12.9 hda022c4_4 conda-forge qtconsole 5.2.2 pyhd8ed1ab_0 conda-forge qtpy 2.0.0 pyhd8ed1ab_0 conda-forge readline 8.1 h46c0cb4_0 conda-forge send2trash 1.8.0 pyhd8ed1ab_0 conda-forge setuptools 60.0.4 py38h578d9bd_0 conda-forge six 1.16.0 pyh6c4a22f_0 conda-forge sqlite 3.37.0 h9cd32fc_0 conda-forge terminado 0.12.1 py38h578d9bd_1 conda-forge testpath 0.5.0 pyhd8ed1ab_0 conda-forge tk 8.6.11 h27826a3_1 conda-forge tornado 6.1 py38h497a2fe_2 conda-forge traitlets 5.1.1 pyhd8ed1ab_0 conda-forge wcwidth 0.2.5 pyh9f0ad1d_2 conda-forge webencodings 0.5.1 py_1 conda-forge wheel 0.37.1 pyhd8ed1ab_0 conda-forge widgetsnbextension 3.5.2 py38h578d9bd_1 conda-forge xeus 1.0.4 h7d0c39e_0 conda-forge xorg-libxau 1.0.9 h7f98852_0 conda-forge xorg-libxdmcp 1.1.3 h7f98852_0 conda-forge xz 5.2.5 h516909a_1 conda-forge zeromq 4.3.4 h9c3ff4c_1 conda-forge zipp 3.6.0 pyhd8ed1ab_0 conda-forge zlib 1.2.11 h36c2ea0_1013 conda-forge zstd 1.5.0 ha95c52a_0 conda-forge (lf3) rg@9I:/mnt/c/Users/RG$ jupyter console --kernel="fortran" Run with XEUS 1.0.4 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for Fortran In [1]: real :: a/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py:852: RuntimeWarning: coroutine 'ZMQSocketChannel.msg_ready' was never awaited while self.client.iopub_channel.msg_ready(): RuntimeWarning: Enable tracemalloc to get the object allocation traceback Unhandled exception in event loop: File "/home/rg/miniconda3/envs/lf3/lib/python3.8/asyncio/events.py", line 81, in _run self._context.run(self._callback, *self._args) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper callback() File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input self.key_processor.process_keys() File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 271, in process_keys self._process_coroutine.send(key_press) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 186, in _process self._call_handler(matches[-1], key_sequence=buffer[:]) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 321, in _call_handler handler.call(event) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_bindings.py", line 124, in call result = self.handler(event) File "/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py", line 475, in _ self.handle_iopub() File "/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py", line 854, in handle_iopub msg_type = sub_msg['header']['msg_type'] Exception 'coroutine' object is not subscriptable Press ENTER to continue... ``` ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 24, 2021, 5:01am UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/12 "2021-12-24T05:01:56Z")
The reason you are getting the error is because you have Python 3.9 installed in the Conda environment, due to this bug in Jupyter: [jupyter's python3 kernel seems to fail with Python 3.9 and 3.10 (Exception 'coroutine' object is not subscriptable) · Issue #23 · conda-forge/jupyter-feedstock · GitHub](https://github.com/conda-forge/jupyter-feedstock/issues/23) Can you please try this: ```auto conda create -n lf3 -c conda-forge lfortran jupyter python=3.8 conda activate lf3 jupyter console --kernel="fortran" ``` That should fix it. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [December 24, 2021, 10:40am UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/13 "2021-12-24T10:40:35Z")
I did this. At the moment, the python version is 3.8.12. Nothing happened. ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [December 24, 2021, 8:03pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/14 "2021-12-24T20:03:16Z")
Thanks for trying it. Can you send me your terminal session? Here is how it should look like: ```auto $ conda create -n lf3 -c conda-forge lfortran jupyter python=3.8 ... $ conda activate lf3 $ jupyter console --kernel="fortran" Run with XEUS 1.0.4 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for Fortran In [1]: 4+4 Out[1]: 8 In [2]: integer :: x In [3]: x = 5 In [4]: x-2 Out[4]: 3 ``` ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [January 17, 2022, 7:13pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/17 "2022-01-17T19:13:06Z")
Hello, I apologize for the late response. I tried it again, and after using CONDA as the installer I was able to get LFortran to run in the terminal. I have tried to fix the Jupyter console problem, but it seems that it is related to xeus and the **CMakeLists.txt** file which is missing. Therefore, I cannot run this command. ```auto cmake \ -DCMAKE_BUILD_TYPE=Debug \ -DWITH_LLVM=yes \ -DWITH_XEUS=yes \ -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ . cmake --build . -j4 --target install ``` and I get this: ```auto cmake \ > -DCMAKE_BUILD_TYPE=Debug \ > -DWITH_LLVM=yes \ > -DWITH_XEUS=yes \ > -DCMAKE_PREFIX_PATH="$CONDA_PREFIX" \ > -DCMAKE_INSTALL_PREFIX="$CONDA_PREFIX" \ > . --build . -j4 --target install CMake Error: The source directory "/mnt/c/Users/RG" does not appear to contain CMakeLists.txt. Specify --help for usage, or press the help button on the CMake GUI. ``` So I searched and I didn’t find the solution. I tried to make CMakeLists.txt. and I found this : [[https://github.com/jupyter-xeus/xeus/blob/master/CMakeLists.txt](https://github.com/jupyter-xeus/xeus/blob/master/CMakeLists.txt)] which led to something weird. So this is the problem. It is worth noting that the Fortran kernel specifications are already included in the Jupyter kernel specification list. I also tried this [https://anaconda.org/conda-forge/fortran\_kernel]([Fortran Kernel :: Anaconda.org](https://anaconda.org/conda-forge/fortran_kernel)) but it didnt work. So I tried this: [https://xeus-python.readthedocs.io/en/stable/installation.html]([Installation — xeus-python documentation](https://xeus-python.readthedocs.io/en/stable/installation.html)) using this command : ```auto conda install xeus-python jupyterlab -c conda-forge ``` It leads to finally having Fortran kernels in Jupyter lab as well as Jupyter notebook BUT it won’t execute the code that is not unexpected 😅 ![image](https://global.discourse-cdn.com/free1/uploads/fortran_lang/original/2X/0/0582375f313fb2291a97dd51eb3e651277535900.jpeg) ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [January 17, 2022, 8:34pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/18 "2022-01-17T20:34:08Z")
Hi @Reza, thanks for the note. Can you try executing exactly what is in here: [I have a problem with LFortran installation - #14 by certik](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/14) ? That should work for you. The approach you are taking is compiling from source, which is a little more challenging — I am happy to get you up and running there too, but let’s first get the Conda way working for you, which is the recommended way unless you are developing LFortran. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [January 17, 2022, 9:05pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/20 "2022-01-17T21:05:40Z")
This is the result: ```auto conda activate lf3 (lf3) rg@ : /mnt/c/Users/RG$ jupyter console --kernel="fortran" Run with XEUS 1.0.4 Jupyter console 6.4.0 LFortran 0.14.0 Jupyter kernel for Fortran In [1]: 4+4/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py:852: RuntimeWarning: coroutine 'ZMQSocketChannel.msg_ready' was never awaited while self.client.iopub_channel.msg_ready(): RuntimeWarning: Enable tracemalloc to get the object allocation traceback Unhandled exception in event loop: File "/home/rg/miniconda3/envs/lf3/lib/python3.8/asyncio/events.py", line 81, in _run self._context.run(self._callback, *self._args) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper callback() File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input self.key_processor.process_keys() File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 271, in process_keys self._process_coroutine.send(key_press) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 186, in _process self._call_handler(matches[-1], key_sequence=buffer[:]) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_processor.py", line 321, in _call_handler handler.call(event) File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/key_binding/key_bindings.py", line 124, in call result = self.handler(event) File "/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py", line 475, in _ self.handle_iopub() File "/home/rg/miniconda3/envs/lf3/lib/python3.8/site-packages/jupyter_console/ptshell.py", line 854, in handle_iopub msg_type = sub_msg['header']['msg_type'] Exception 'coroutine' object is not subscriptable Press ENTER to continue... ``` ---
**Author:** ![certik](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/certik/32/4_2.png) [@certik](https://fortran-lang.discourse.group/u/certik)\ **Post date:** [January 17, 2022, 11:03pm UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/21 "2022-01-17T23:03:19Z")
> [@Reza](#): > > ```auto > Unhandled exception in event loop: > File "/home/rg/miniconda3/envs/lf3/lib/python3.8/asyncio/events.py", line 81, in _run > self._context.run(self._callback, *self._args) > File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/input/vt100.py", line 170, in callback_wrapper > callback() > File "/home/rg/.local/lib/python3.8/site-packages/prompt_toolkit/application/application.py", line 690, in read_from_input > self.key_processor.process_keys() > > ``` Thanks! Based on the traceback, it seems it is picking up libraries from your local `~/.local/` Python environment which it shouldn’t. You can try temporarily moving your `local` directory like this: ```auto mv ~/.local ~/.local_old ``` And try again. It should hopefully work then. You can move it back by: ```auto mv ~/.local_old ~/.local ``` ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [January 18, 2022, 6:47am UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/22 "2022-01-18T06:47:24Z")
That didn’t solve the problem. But it seems the problem was related to the version of Jupyter-client. The issue is described here: [RuntimeWarning: coroutine ‘ZMQSocketChannel.msg\_ready’ was never awaited #241](https://github.com/jupyter/jupyter_console/issues/241) I downgraded the jupyter-client (_conda install jupyter\_client=6.1_) and now the problem is solved and it works very well. ---
**Author:** ![Reza](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Reza](https://fortran-lang.discourse.group/u/Reza)\ **Post date:** [January 18, 2022, 10:15am UTC](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440/23 "2022-01-18T10:15:23Z")
I’m not sure if it’s working properly. ![image](https://global.discourse-cdn.com/free1/uploads/fortran_lang/original/2X/2/28dd02605db24c98166953b37d6e7eb4f48b9cd1.png) specifically for 2/3 in line 2. [Next page](https://fortran-lang.discourse.group/t/i-have-a-problem-with-lfortran-installation/2440.md?page=2)