Conda instal: UnsatisfiableError

[piofel]

On Ubuntu 20.04 (all packages up to the date), while installing by conda install -c tudat-team tudat, I encountered:

`
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: \
Found conflicts! Looking for incompatible packages.
This can take several minutes. Press CTRL-C to abort.
failed

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versions

Package libstdcxx-ng conflicts for:
python=3.9 -> libstdcxx-ng[version='>=7.3.0|>=7.5.0']
tudat -> libstdcxx-ng[version='>=7.5.0|>=9.3.0|>=9.4.0']The following specifications were found to be incompatible with your system:

• feature:/linux-64::__glibc==2.31=0
• feature:|@/linux-64::__glibc==2.31=0
• python=3.9 -> libgcc-ng[version='>=7.5.0'] -> __glibc[version='>=2.17']

Your installed version is: 2.31
`

[DominicDirkx]

Hi Piotr,

I can confirm that I get a similar issue:

UnsatisfiableError: The following specifications were found to be incompatible with your system:

• feature:/linux-64::__glibc==2.23=0
• tudat -> libgcc-ng[version='>=9.3.0'] -> __glibc[version='>=2.17']

Your installed version is: 2.23

We will look into this problem in the coming week, and get back to you.

[DominicDirkx]

Hi Piotr,

We still don't know why this issue occurs but it seems to be isolated to Linux. Strangely enough, if I install tudat using a .yaml file:

name: tudat-test
channels:
  - conda-forge
  - tudat-team
dependencies:
  - tudat
  - matplotlib
  - scipy
  - pandas

it seems to work perfectly well. Can you see if this also works for you?

[piofel]

@DominicDirkx Could you provide a link for the .yaml file?

[DominicDirkx]

The full contents of the yaml file are what I put above as a 'code block'. If you paste this into a file named environment.yaml file, and run

conda env create -f environment.yaml

it should work. Or at least, it did for me. In the process of diagnosing this issue I also did

conda update conda
conda update anaconda

you may want to do this before creating the new environment.

[piofel]

The .yaml file worked well for me, thank you!

[DominicDirkx]

Happy to hear it!

[piofel]

@DominicDirkx While the installation via an .yaml file may be sufficient for Python users, one who wants to use the C++ interface by putting find_package(Tudat 2.0 REQUIRED) into a CMakeLists.txt will fail, since CMake cannot find Tudat installed in such a way. I received this:

CMake Error at CMakeLists.txt:14 (find_package):By not providing "FindTudat.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Tudat", but
CMake did not find one.

Could not find a package configuration file provided by "Tudat" (requested
version 2.0) with any of the following names:

  TudatConfig.cmake
  tudat-config.cmake

Add the installation prefix of "Tudat" to CMAKE_PREFIX_PATH or set
"Tudat_DIR" to a directory containing one of the above files.  If "Tudat"
provides a separate development package or SDK, be sure it has been
installed.

Can it be fixed? I have attempted a quick-and-dirty solution, by putting the path to the CMake configuration file (/home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/ in my case) into build/CMakeCache.txt, i.e., here:

//The directory containing a CMake configuration file for Tudat.
Tudat_DIR:PATH=/home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/

but then, having find_package(Tudat 2.9 REQUIRED) and target_link_libraries(MyProjectName Eigen3::Eigen Tudat::tudat_gravitation Tudat::tudat_basic_astrodynamics) in CMakeLists.txt, I receive:

[proc] Executing command: /usr/bin/cmake --no-warn-unused-cli -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_C_COMPILER:FILEPATH=/bin/x86_64-linux-gnu-gcc-9 -DCMAKE_CXX_COMPILER:FILEPATH=/bin/x86_64-linux-gnu-g++-9 -H/home/piotr/pg/st/sat/aocs_design_suite_2 -B/home/piotr/pg/st/sat/aocs_design_suite_2/build -G "Unix Makefiles"
[cmake] Not searching for unused variables given on the command line.
[cmake] CMake Error at /home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat_export.cmake:320 (message):
[cmake]   The imported target "Tudat::tudat_aerodynamics" references the file
[cmake] 
[cmake]      "/home/conda/feedstock_root/build_artifacts/tudat_1643028881817/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_place/lib/libtudat_aerodynamics.a"
[cmake] 
[cmake]   but this file does not exist.  Possible reasons include:
[cmake] 
[cmake]   * The file was deleted, renamed, or moved to another location.
[cmake] 
[cmake]   * An install or uninstall procedure did not complete successfully.
[cmake] 
[cmake]   * The installation package was faulty and contained
[cmake] 
[cmake]      "/home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat_export.cmake"
[cmake] 
[cmake]   but not all the files it references.
[cmake] 
[cmake] Call Stack (most recent call first):
[cmake]   /home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat-config.cmake:43 (include)
[cmake]   CMakeLists.txt:14 (find_package)
[cmake] 
[cmake] 
[cmake] CMake Warning (dev) in /home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat_export.cmake:
[cmake]   Policy CMP0011 is not set: Included scripts do automatic cmake_policy PUSH
[cmake]   and POP.  Run "cmake --help-policy CMP0011" for policy details.  Use the
[cmake]   cmake_policy command to set the policy and suppress this warning.
[cmake] 
[cmake]   The included script
[cmake] 
[cmake]     /home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat_export.cmake
[cmake] 
[cmake]   affects policy settings.  CMake is implying the NO_POLICY_SCOPE option for
[cmake]   compatibility, so the effects are applied to the including context.
[cmake] Call Stack (most recent call first):
[cmake]   /home/piotr/anaconda3/pkgs/tudat-2.10.0-h7c56f47_1/lib/cmake/tudat/tudat-config.cmake:43 (include)
[cmake]   CMakeLists.txt:14 (find_package)
[cmake] This warning is for project developers.  Use -Wno-dev to suppress it.
[cmake] 
[cmake] -- Configuring incomplete, errors occurred!

It seems that the C++ interface is very hard to use now. Should I make the problem with CMake a new isse?

[DominicDirkx]

Hi Piotr, you should be able to use the conda environment for a CMakeLists.txt as well. You can add the conda environment as per step 7 in the README here:

https://github.com/tudat-team/tudat-bundle

Then, you should be able to find all the packages in the conda environment (including tudat)

[piofel]

Hello Dominic, thank you for the tip. I think it moved me somewhat forward, since when I added

set(DCMAKE_PREFIX_PATH /home/piotr/anaconda3/envs/tudat-test)
set(DCMAKE_CXX_STANDARD 14)
set(DBoost_NO_BOOST_CMAKE ON)

to my CMakeLists.txt (I use Visual Studio Code, not CLion, what requires to modify CMakeLists.txt manually), the configuration gave me another error, about not finding CSpice:

CMake Warning at CMakeLists.txt:21 (find_package):By not providing "FindSpice.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Spice", but
CMake did not find one.

Could not find a package configuration file provided by "Spice" with any of
the following names:

  SpiceConfig.cmake
  spice-config.cmake

Add the installation prefix of "Spice" to CMAKE_PREFIX_PATH or set
"Spice_DIR" to a directory containing one of the above files.  If "Spice"
provides a separate development package or SDK, be sure it has been
installed.

I suppose that this is because I have installed Tudat by the .yaml file, since conda install -c tudat-team tudat does not work yet on Ubuntu 20.04. Is this the case?

[piofel]

@DominicDirkx With today's (8 II 2022) updates of Ubuntu 20.04 and the newest Anaconda 4.11.0, I was able to install the tudat-bundle environment via conda install -c tudat-team tudat, so I suppose the issue is no longer relevant for the Python users. However, for a C++ user, there is a problem with CSpice. With the following CMakeLists.txt

# Specify minimum CMake version required.
cmake_minimum_required(VERSION 2.6)

# Specify project name.
project(TudatTest)

set(DCMAKE_PREFIX_PATH /home/piotr/anaconda3/envs/tudat-bundle)
set(DCMAKE_CXX_STANDARD 14)
set(DBoost_NO_BOOST_CMAKE ON)

# Find Eigen3 library on local system.
find_package(Eigen3 REQUIRED)

# Find Boost libraries on local system.
find_package(Boost 1.45.0 COMPONENTS thread date_time system unit_test_framework filesystem regex REQUIRED)

# Find Tudat library on local system.
find_package(Tudat 2.9 REQUIRED)

# Find CSPICE library on local system.
find_package(Spice)

file(GLOB SOURCES "src/*.cpp")
add_executable(TudatTest ${SOURCES})
target_link_libraries(TudatTest Eigen3::Eigen tudat_gravitation tudat_basic_astrodynamics)

CMake complains about not finding CSpice:

CMake Warning at CMakeLists.txt:21 (find_package):By not providing "FindSpice.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Spice", but
CMake did not find one.

Could not find a package configuration file provided by "Spice" with any of
the following names:

  SpiceConfig.cmake
  spice-config.cmake

Add the installation prefix of "Spice" to CMAKE_PREFIX_PATH or set
"Spice_DIR" to a directory containing one of the above files.  If "Spice"
provides a separate development package or SDK, be sure it has been
installed.

Should I make this a new issue?

[DominicDirkx]

I think this should be:

find_package(CSpice REQUIRED 1.0.0)

Possibly the name of the package we use (but not its contents) changed when moving from the old to the new tudat setup

[piofel]

@DominicDirkx Thank you, I will try this. I have tried to use conda install -c tudat-team tudat on another machine with fully updated Ubuntu 20.04 and Anaconda, and I received:

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: | 
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abor/ 
failed                                                                                                                   

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versions

Package _libgcc_mutex conflicts for:
tudat -> libgcc-ng[version='>=9.3.0'] -> _libgcc_mutex[version='*|0.1',build=main]
python=3.9 -> libgcc-ng[version='>=7.5.0'] -> _libgcc_mutex[version='*|0.1',build=main]

Package libgcc-ng conflicts for:
python=3.9 -> libgcc-ng[version='>=7.3.0|>=7.5.0']
python=3.9 -> zlib[version='>=1.2.11,<1.3.0a0'] -> libgcc-ng[version='>=7.2.0']The following specifications were found to be incompatible with your system:

  - feature:/linux-64::__glibc==2.31=0
  - feature:|@/linux-64::__glibc==2.31=0
  - tudat -> libgcc-ng[version='>=9.3.0'] -> __glibc[version='>=2.17']

Your installed version is: 2.31

[DominicDirkx]

Hmmm, it's weird that it works on some systems but not on others... But, on this new machine does the installation with teh yaml file work?

[piofel]

Yes, the installation by .yaml file works on the second machine.

[piofel]

@DominicDirkx And on my first machine (the one where conda install -c tudat-team tudat works) there is still problem with CSpice; when I use in CMakeLists.txt the find_package(CSpice REQUIRED 1.0.0) or find_package(CSpice 1.0.0 REQUIRED), I still receive:

CMake Error at CMakeLists.txt:21 (find_package):By not providing "FindCSpice.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "CSpice", but
CMake did not find one.

Could not find a package configuration file provided by "CSpice" (requested
version 1.0.0) with any of the following names:

  CSpiceConfig.cmake
  cspice-config.cmake

Add the installation prefix of "CSpice" to CMAKE_PREFIX_PATH or set
"CSpice_DIR" to a directory containing one of the above files.  If "CSpice"
provides a separate development package or SDK, be sure it has been
installed.