Fix Conda CI on Linux avoiding to use the defaults channel by installing Mambaforge #840
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traversaro
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This was referenced Jul 30, 2021
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The macOS CI failures are unrelated and due to #841, please ignore them. |
Nicogene
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Currently the CI is failing on Linux and Windows with a weird conflict error. This is due to the fact that we are install mamba (from the conda-forge channel) on the top of miniconda3 (that by default install all the packages from the defaults channel). To make an analogy in apt world, this is like installing Debian, and then trying to install packages from the Ubuntu repo: something can go wrong. To solve this problem, we install [mambaforge](https://github.com/conda-forge/miniforge) (a installer like miniconda3 but already using conda-forge packages) directly, so we always and only use packages from the conda-forge channel. Similar to: * robotology/robotology-superbuild#840 * robotology/robometry#141 * robotology/yarp-devices-ros2#44 * gazebosim/gazebo-classic#3287
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…supporting graphviz >= 3 on Windows (#3287) The fix is composed by two unrelated changes ### [Fix conda-forge GitHub Action CI by using mambaforge directly](eea77c2) Currently the CI is failing on Linux and Windows with a weird conflict error. This is due to the fact that we are install mamba (from the conda-forge channel) on the top of miniconda3 (that by default install all the packages from the defaults channel). To make an analogy in apt world, this is like installing Debian, and then trying to install packages from the Ubuntu repo: something can go wrong. To solve this problem, we install [mambaforge](https://github.com/conda-forge/miniforge) (a installer like miniconda3 but already using conda-forge packages) directly, so we always and only use packages from the conda-forge channel. Similar to: * robotology/robotology-superbuild#840 * robotology/robometry#141 * robotology/yarp-devices-ros2#44 ### [Add support to use graphviz >= 3 on Windows](15435b1) Since graphviz 3, any downstream library that on Windows links against a graphviz shared library needs to define the `GVDLL` preprocessor definition (see https://gitlab.com/graphviz/graphviz/-/blob/3.0.0/CHANGELOG.md#changed). To deal with this, this PR adds the `GVDLL` definition for `gazebo_gui` when on Windows (on graphviz < 3 defining this definition will be harmless). As that prepocessor definition should not be set when linking static graphviz, and given that we can't detect in `FindGraphviz` if the linked graphviz is static or not, an ad-hoc CMake variable `GAZEBO_FINDGRAPHVIZ_USE_STATIC_GRAPHVIZ` is introduced in the case this definition needs to be disabled. Similar to robotology/ycm-cmake-modules#414 .
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The CI has been using the defaults channel (even if this was not wanted) for a long time, see conda-incubator/setup-miniconda#186 and #669 . However, since yesterday this created a compilation error:
For this reason, better to cleanup the use of conda channels in the CI, making sure that we don't use
defaultsat all, by using Mambaforge as base installer.Similar to robotology/robometry#141 .
Fix #669 .