Latest gazebo build can't be installed together with latest pcl build

[traversaro]

Solution to issue cannot be found in the documentation.

• I checked the documentation.

Issue

See for example:

traversaro@IITBMP014LW012:~/testblf$ conda create -n testblf gazebo==11.14.0=*_17 pcl==1.14.1=*_5
Channels:
 - robostack-staging
 - conda-forge
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:
  - package qwt-6.3.0-h7c222af_0 requires qt-main >=5.15.8,<5.16.0a0, but none of the providers can be installed

Could not solve for environment specs
The following packages are incompatible
├─ gazebo 11.14.0 *_17 is installable and it requires
│  ├─ graphviz >=12.0.0,<13.0a0 , which requires
│  │  └─ libglib >=2.80.3,<3.0a0 , which requires
│  │     └─ pcre2 >=10.44,<10.45.0a0 , which can be installed;
│  └─ qwt >=6.3.0,<6.4.0a0 , which requires
│     └─ qt-main >=5.15.8,<5.16.0a0  with the potential options
│        ├─ qt-main 5.15.8 would require
│        │  └─ icu >=72.1,<73.0a0 , which can be installed;
│        ├─ qt-main 5.15.8 would require
│        │  └─ icu >=73.2,<74.0a0 , which can be installed;
│        ├─ qt-main 5.15.8 would require
│        │  ├─ harfbuzz >=9.0.0,<10.0a0  with the potential options
│        │  │  ├─ harfbuzz 9.0.0, which can be installed;
│        │  │  └─ harfbuzz 9.0.0 would require
│        │  │     └─ icu >=75.1,<76.0a0 , which conflicts with any installable versions previously reported;
│        │  ├─ icu >=73.2,<74.0a0 , which can be installed;
│        │  └─ libglib >=2.80.3,<3.0a0 , which can be installed (as previously explained);
│        └─ qt-main 5.15.8 would require
│           └─ icu >=70.1,<71.0a0 , which can be installed;
└─ pcl 1.14.1 *_5 is not installable because it requires
   └─ qt6-main >=6.7.2,<6.8.0a0  but there are no viable options
      ├─ qt6-main 6.7.2 would require
      │  ├─ harfbuzz >=8.5.0,<9.0a0 , which conflicts with any installable versions previously reported;
      │  └─ pcre2 >=10.43,<10.44.0a0 , which conflicts with any installable versions previously reported;
      ├─ qt6-main 6.7.2 would require
      │  └─ pcre2 >=10.43,<10.44.0a0 , which conflicts with any installable versions previously reported;
      └─ qt6-main 6.7.2 would require
         └─ icu >=75.1,<76.0a0 , which conflicts with any installable versions previously reported.

The problem is that qt-main (qt5) was never updated to icu 75 (see conda-forge/qt-main-feedstock#282, probably as icu 75 now requires C++17) while recent version of qt6-main required by recent versions of pcl require icu 75.

fyi @conda-forge/pcl @FabioBergonti

Installed packages

.

Environment info

.

[traversaro]

conda-forge/qt-main-feedstock#288 seems in a good shape now, once it is merged this should solve the problem. fyi @FabioBergonti

[traversaro]

conda-forge/qt-main-feedstock#288 seems in a good shape now, once it is merged this should solve the problem. fyi @FabioBergonti

Unfortunatly there are still problems:

Channels:
Channels:
 - robostack-staging
 - conda-forge
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: failed

LibMambaUnsatisfiableError: Encountered problems while solving:
  - package gazebo-11.14.0-gzcompatnamehb9ef551_17 requires libgdal-core >=3.9.2,<3.10.0a0, but none of the providers can be installed

Could not solve for environment specs
The following packages are incompatible
├─ gazebo 11.14.0 *_17 is installable and it requires
│  └─ libgdal-core >=3.9.2,<3.10.0a0  with the potential options
│     ├─ libgdal-core 3.9.2 would require
│     │  └─ proj >=9.4.1,<9.5.0a0 , which can be installed;
│     └─ libgdal-core 3.9.2 would require
│        └─ proj >=9.5.0,<9.6.0a0 , which can be installed;
└─ pcl 1.14.1 *_5 is not installable because it requires
   └─ vtk-base >=9.3.0,<9.3.1.0a0 , which requires
      └─ proj >=9.3.1,<9.3.2.0a0 , which conflicts with any installable versions previously reported.

Channels:: command not found

[traversaro]

Related: conda-forge/vtk-feedstock#346 .

[traversaro]

This should be solved by conda-forge/pcl-feedstock#75 .

[traversaro]

This was solved, see for example:

conda create -n testblf gazebo==11.14.0=*_17 pcl==1.14.1=*_6