Installing YARP conda binary package in conda-forge does not result in OpenCV being installed

[traversaro]

Accoding to @xEnVrE , after that you install yarp from the robotology conda channel, opencv is not installed, and you can get errors such as:

 Imported target "YARP::YARP_cv" includes non-existent path
    "/home/xenvre/miniforge3/envs/env/include/opencv4"

This is strange, as in theory opencv has the correct run_exports configured in their recipe, see https://github.com/conda-forge/opencv-feedstock/blob/428de6e71f0a6e7249e8e5716c7774921004beb2/recipe/meta.yaml#L48 .

[traversaro]

Fixed by #805 (as it creates a regression in #807 (comment)).

[traversaro]

I am waiting on the next successful conda package generation to actually close this.

[traversaro]

Packages were re-generated and uploaded in https://github.com/robotology/robotology-superbuild/actions/runs/980883495 .

Indeed, now libopencv is installed with YARP:

(yarp) gitpod@ws-0608d8f4-4299-4007-8052-e4d7657a3103:/workspace/gitpod-ubuntu-20.04$ conda install -c conda-forge -c robotology yarp
Collecting package metadata (current_repodata.json): done
Solving environment: done

## Package Plan ##

  environment location: /home/gitpod/miniforge3/envs/yarp

  added / updated specs:
    - yarp


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    ace-7.0.2                  |       h9c3ff4c_0         7.3 MB  conda-forge
    alsa-lib-1.2.3             |       h516909a_0         560 KB  conda-forge
    bzip2-1.0.8                |       h7f98852_4         484 KB  conda-forge
    c-ares-1.17.1              |       h7f98852_1         109 KB  conda-forge
    cairo-1.16.0               |    h6cf1ce9_1008         1.5 MB  conda-forge
    dbus-1.13.6                |       h48d8840_2         572 KB  conda-forge
    eigen-3.3.9                |       h4bd325d_1         970 KB  conda-forge
    expat-2.4.1                |       h9c3ff4c_0         182 KB  conda-forge
    ffmpeg-4.3.1               |       hca11adc_2        91.9 MB  conda-forge
    fontconfig-2.13.1          |    hba837de_1005         357 KB  conda-forge
    freetype-2.10.4            |       h0708190_1         890 KB  conda-forge
    gettext-0.19.8.1           |    h0b5b191_1005         3.6 MB  conda-forge
    glib-2.68.3                |       h9c3ff4c_0         449 KB  conda-forge
    glib-tools-2.68.3          |       h9c3ff4c_0          86 KB  conda-forge
    gmp-6.2.1                  |       h58526e2_0         806 KB  conda-forge
    gnutls-3.6.13              |       h85f3911_1         2.0 MB  conda-forge
    graphite2-1.3.13           |    h58526e2_1001         102 KB  conda-forge
    gst-plugins-base-1.18.4    |       hf529b03_2         2.6 MB  conda-forge
    gstreamer-1.18.4           |       h76c114f_2         2.0 MB  conda-forge
    harfbuzz-2.8.1             |       h83ec7ef_0         1.9 MB  conda-forge
    hdf5-1.10.6                |nompi_h6a2412b_1114         3.1 MB  conda-forge
    icu-68.1                   |       h58526e2_0        13.0 MB  conda-forge
    jasper-1.900.1             |    h07fcdf6_1006         286 KB  conda-forge
    jbig-2.1                   |    h7f98852_2003          43 KB  conda-forge
    jpeg-9d                    |       h36c2ea0_0         264 KB  conda-forge
    krb5-1.19.1                |       hcc1bbae_0         1.4 MB  conda-forge
    lame-3.100                 |    h7f98852_1001         496 KB  conda-forge
    lerc-2.2.1                 |       h9c3ff4c_0         213 KB  conda-forge
    libblas-3.9.0              |       9_openblas          11 KB  conda-forge
    libcblas-3.9.0             |       9_openblas          11 KB  conda-forge
    libclang-11.1.0            |default_ha53f305_1        19.2 MB  conda-forge
    libcurl-7.77.0             |       h2574ce0_0         334 KB  conda-forge
    libdeflate-1.7             |       h7f98852_5          67 KB  conda-forge
    libedit-3.1.20191231       |       he28a2e2_2         121 KB  conda-forge
    libev-4.33                 |       h516909a_1         104 KB  conda-forge
    libevent-2.1.10            |       hcdb4288_3         1.1 MB  conda-forge
    libgfortran-ng-9.3.0       |      hff62375_19          22 KB  conda-forge
    libgfortran5-9.3.0         |      hff62375_19         2.0 MB  conda-forge
    libglib-2.68.3             |       h3e27bee_0         3.1 MB  conda-forge
    libiconv-1.16              |       h516909a_0         1.4 MB  conda-forge
    libjpeg-turbo-2.1.0        |       h7f98852_0         987 KB  conda-forge
    liblapack-3.9.0            |       9_openblas          11 KB  conda-forge
    liblapacke-3.9.0           |       9_openblas          11 KB  conda-forge
    libllvm11-11.1.0           |       hf817b99_2        29.1 MB  conda-forge
    libnghttp2-1.43.0          |       h812cca2_0         808 KB  conda-forge
    libogg-1.3.4               |       h7f98852_1         206 KB  conda-forge
    libopenblas-0.3.15         |pthreads_h8fe5266_1         9.2 MB  conda-forge
    libopencv-4.5.1            |   py36h03ae2a6_1        33.2 MB  conda-forge
    libopus-1.3.1              |       h7f98852_1         255 KB  conda-forge
    libpng-1.6.37              |       h21135ba_2         306 KB  conda-forge
    libpq-13.3                 |       hd57d9b9_0         2.7 MB  conda-forge
    libprotobuf-3.15.8         |       h780b84a_0         2.5 MB  conda-forge
    libssh2-1.9.0              |       ha56f1ee_6         226 KB  conda-forge
    libtiff-4.3.0              |       hf544144_1         668 KB  conda-forge
    libuuid-2.32.1             |    h7f98852_1000          28 KB  conda-forge
    libvorbis-1.3.7            |       h9c3ff4c_0         280 KB  conda-forge
    libwebp-base-1.2.0         |       h7f98852_2         815 KB  conda-forge
    libxcb-1.13                |    h7f98852_1003         395 KB  conda-forge
    libxkbcommon-1.0.3         |       he3ba5ed_0         581 KB  conda-forge
    libxml2-2.9.12             |       h72842e0_0         772 KB  conda-forge
    lz4-c-1.9.3                |       h9c3ff4c_0         179 KB  conda-forge
    mysql-common-8.0.25        |       ha770c72_2         1.6 MB  conda-forge
    mysql-libs-8.0.25          |       hfa10184_2         1.8 MB  conda-forge
    nettle-3.6                 |       he412f7d_0         6.5 MB  conda-forge
    nspr-4.30                  |       h9c3ff4c_0         233 KB  conda-forge
    nss-3.67                   |       hb5efdd6_0         2.1 MB  conda-forge
    openh264-2.1.1             |       h780b84a_0         1.5 MB  conda-forge
    pcre-8.45                  |       h9c3ff4c_0         253 KB  conda-forge
    pixman-0.40.0              |       h36c2ea0_0         627 KB  conda-forge
    pthread-stubs-0.4          |    h36c2ea0_1001           5 KB  conda-forge
    qt-5.12.9                  |       hda022c4_4        99.5 MB  conda-forge
    robot-testing-framework-2.0.1|       h9c3ff4c_0         194 KB  conda-forge
    sdl-1.2.15                 |       h9c3ff4c_1         425 KB  conda-forge
    tinyxml-2.6.2              |       h4bd325d_2          55 KB  conda-forge
    x264-1!161.3030            |       h7f98852_1         2.5 MB  conda-forge
    xorg-kbproto-1.0.7         |    h7f98852_1002          27 KB  conda-forge
    xorg-libice-1.0.10         |       h7f98852_0          58 KB  conda-forge
    xorg-libsm-1.2.3           |    hd9c2040_1000          26 KB  conda-forge
    xorg-libx11-1.7.2          |       h7f98852_0         941 KB  conda-forge
    xorg-libxau-1.0.9          |       h7f98852_0          13 KB  conda-forge
    xorg-libxdmcp-1.1.3        |       h7f98852_0          19 KB  conda-forge
    xorg-libxext-1.3.4         |       h7f98852_1          54 KB  conda-forge
    xorg-libxrender-0.9.10     |    h7f98852_1003          32 KB  conda-forge
    xorg-renderproto-0.11.1    |    h7f98852_1002           9 KB  conda-forge
    xorg-xextproto-7.3.0       |    h7f98852_1002          28 KB  conda-forge
    xorg-xproto-7.0.31         |    h7f98852_1007          73 KB  conda-forge
    yarp-3.4.5                 |  py39hb4e7e14_14        10.0 MB  robotology
    ycm-cmake-modules-0.12.2   |       h9c3ff4c_0         133 KB  conda-forge
    zstd-1.5.0                 |       ha95c52a_0         490 KB  conda-forge
    ------------------------------------------------------------
                                           Total:       376.5 MB

The following NEW packages will be INSTALLED:

  _libgcc_mutex      conda-forge/linux-64::_libgcc_mutex-0.1-conda_forge
  _openmp_mutex      conda-forge/linux-64::_openmp_mutex-4.5-1_gnu
  ace                conda-forge/linux-64::ace-7.0.2-h9c3ff4c_0
  alsa-lib           conda-forge/linux-64::alsa-lib-1.2.3-h516909a_0
  bzip2              conda-forge/linux-64::bzip2-1.0.8-h7f98852_4
  c-ares             conda-forge/linux-64::c-ares-1.17.1-h7f98852_1
  ca-certificates    conda-forge/linux-64::ca-certificates-2021.5.30-ha878542_0
  cairo              conda-forge/linux-64::cairo-1.16.0-h6cf1ce9_1008
  certifi            conda-forge/linux-64::certifi-2021.5.30-py39hf3d152e_0
  dbus               conda-forge/linux-64::dbus-1.13.6-h48d8840_2
  eigen              conda-forge/linux-64::eigen-3.3.9-h4bd325d_1
  expat              conda-forge/linux-64::expat-2.4.1-h9c3ff4c_0
  ffmpeg             conda-forge/linux-64::ffmpeg-4.3.1-hca11adc_2
  fontconfig         conda-forge/linux-64::fontconfig-2.13.1-hba837de_1005
  freetype           conda-forge/linux-64::freetype-2.10.4-h0708190_1
  gettext            conda-forge/linux-64::gettext-0.19.8.1-h0b5b191_1005
  glib               conda-forge/linux-64::glib-2.68.3-h9c3ff4c_0
  glib-tools         conda-forge/linux-64::glib-tools-2.68.3-h9c3ff4c_0
  gmp                conda-forge/linux-64::gmp-6.2.1-h58526e2_0
  gnutls             conda-forge/linux-64::gnutls-3.6.13-h85f3911_1
  graphite2          conda-forge/linux-64::graphite2-1.3.13-h58526e2_1001
  gst-plugins-base   conda-forge/linux-64::gst-plugins-base-1.18.4-hf529b03_2
  gstreamer          conda-forge/linux-64::gstreamer-1.18.4-h76c114f_2
  harfbuzz           conda-forge/linux-64::harfbuzz-2.8.1-h83ec7ef_0
  hdf5               conda-forge/linux-64::hdf5-1.10.6-nompi_h6a2412b_1114
  icu                conda-forge/linux-64::icu-68.1-h58526e2_0
  jasper             conda-forge/linux-64::jasper-1.900.1-h07fcdf6_1006
  jbig               conda-forge/linux-64::jbig-2.1-h7f98852_2003
  jpeg               conda-forge/linux-64::jpeg-9d-h36c2ea0_0
  krb5               conda-forge/linux-64::krb5-1.19.1-hcc1bbae_0
  lame               conda-forge/linux-64::lame-3.100-h7f98852_1001
  ld_impl_linux-64   conda-forge/linux-64::ld_impl_linux-64-2.35.1-hea4e1c9_2
  lerc               conda-forge/linux-64::lerc-2.2.1-h9c3ff4c_0
  libblas            conda-forge/linux-64::libblas-3.9.0-9_openblas
  libcblas           conda-forge/linux-64::libcblas-3.9.0-9_openblas
  libclang           conda-forge/linux-64::libclang-11.1.0-default_ha53f305_1
  libcurl            conda-forge/linux-64::libcurl-7.77.0-h2574ce0_0
  libdeflate         conda-forge/linux-64::libdeflate-1.7-h7f98852_5
  libedit            conda-forge/linux-64::libedit-3.1.20191231-he28a2e2_2
  libev              conda-forge/linux-64::libev-4.33-h516909a_1
  libevent           conda-forge/linux-64::libevent-2.1.10-hcdb4288_3
  libffi             conda-forge/linux-64::libffi-3.3-h58526e2_2
  libgcc-ng          conda-forge/linux-64::libgcc-ng-9.3.0-h2828fa1_19
  libgfortran-ng     conda-forge/linux-64::libgfortran-ng-9.3.0-hff62375_19
  libgfortran5       conda-forge/linux-64::libgfortran5-9.3.0-hff62375_19
  libglib            conda-forge/linux-64::libglib-2.68.3-h3e27bee_0
  libgomp            conda-forge/linux-64::libgomp-9.3.0-h2828fa1_19
  libiconv           conda-forge/linux-64::libiconv-1.16-h516909a_0
  libjpeg-turbo      conda-forge/linux-64::libjpeg-turbo-2.1.0-h7f98852_0
  liblapack          conda-forge/linux-64::liblapack-3.9.0-9_openblas
  liblapacke         conda-forge/linux-64::liblapacke-3.9.0-9_openblas
  libllvm11          conda-forge/linux-64::libllvm11-11.1.0-hf817b99_2
  libnghttp2         conda-forge/linux-64::libnghttp2-1.43.0-h812cca2_0
  libogg             conda-forge/linux-64::libogg-1.3.4-h7f98852_1
  libopenblas        conda-forge/linux-64::libopenblas-0.3.15-pthreads_h8fe5266_1
  libopencv          conda-forge/linux-64::libopencv-4.5.1-py36h03ae2a6_1
  libopus            conda-forge/linux-64::libopus-1.3.1-h7f98852_1
  libpng             conda-forge/linux-64::libpng-1.6.37-h21135ba_2
  libpq              conda-forge/linux-64::libpq-13.3-hd57d9b9_0
  libprotobuf        conda-forge/linux-64::libprotobuf-3.15.8-h780b84a_0
  libssh2            conda-forge/linux-64::libssh2-1.9.0-ha56f1ee_6
  libstdcxx-ng       conda-forge/linux-64::libstdcxx-ng-9.3.0-h6de172a_19
  libtiff            conda-forge/linux-64::libtiff-4.3.0-hf544144_1
  libuuid            conda-forge/linux-64::libuuid-2.32.1-h7f98852_1000
  libvorbis          conda-forge/linux-64::libvorbis-1.3.7-h9c3ff4c_0
  libwebp-base       conda-forge/linux-64::libwebp-base-1.2.0-h7f98852_2
  libxcb             conda-forge/linux-64::libxcb-1.13-h7f98852_1003
  libxkbcommon       conda-forge/linux-64::libxkbcommon-1.0.3-he3ba5ed_0
  libxml2            conda-forge/linux-64::libxml2-2.9.12-h72842e0_0
  lz4-c              conda-forge/linux-64::lz4-c-1.9.3-h9c3ff4c_0
  mysql-common       conda-forge/linux-64::mysql-common-8.0.25-ha770c72_2
  mysql-libs         conda-forge/linux-64::mysql-libs-8.0.25-hfa10184_2
  ncurses            conda-forge/linux-64::ncurses-6.2-h58526e2_4
  nettle             conda-forge/linux-64::nettle-3.6-he412f7d_0
  nspr               conda-forge/linux-64::nspr-4.30-h9c3ff4c_0
  nss                conda-forge/linux-64::nss-3.67-hb5efdd6_0
  openh264           conda-forge/linux-64::openh264-2.1.1-h780b84a_0
  openssl            conda-forge/linux-64::openssl-1.1.1k-h7f98852_0
  pcre               conda-forge/linux-64::pcre-8.45-h9c3ff4c_0
  pip                conda-forge/noarch::pip-21.1.3-pyhd8ed1ab_0
  pixman             conda-forge/linux-64::pixman-0.40.0-h36c2ea0_0
  pthread-stubs      conda-forge/linux-64::pthread-stubs-0.4-h36c2ea0_1001
  python             conda-forge/linux-64::python-3.9.5-h49503c6_0_cpython
  python_abi         conda-forge/linux-64::python_abi-3.9-2_cp39
  qt                 conda-forge/linux-64::qt-5.12.9-hda022c4_4
  readline           conda-forge/linux-64::readline-8.1-h46c0cb4_0
  robot-testing-fra~ conda-forge/linux-64::robot-testing-framework-2.0.1-h9c3ff4c_0
  sdl                conda-forge/linux-64::sdl-1.2.15-h9c3ff4c_1
  setuptools         conda-forge/linux-64::setuptools-49.6.0-py39hf3d152e_3
  sqlite             conda-forge/linux-64::sqlite-3.36.0-h9cd32fc_0
  tinyxml            conda-forge/linux-64::tinyxml-2.6.2-h4bd325d_2
  tk                 conda-forge/linux-64::tk-8.6.10-h21135ba_1
  tzdata             conda-forge/noarch::tzdata-2021a-he74cb21_0
  wheel              conda-forge/noarch::wheel-0.36.2-pyhd3deb0d_0
  x264               conda-forge/linux-64::x264-1!161.3030-h7f98852_1
  xorg-kbproto       conda-forge/linux-64::xorg-kbproto-1.0.7-h7f98852_1002
  xorg-libice        conda-forge/linux-64::xorg-libice-1.0.10-h7f98852_0
  xorg-libsm         conda-forge/linux-64::xorg-libsm-1.2.3-hd9c2040_1000
  xorg-libx11        conda-forge/linux-64::xorg-libx11-1.7.2-h7f98852_0
  xorg-libxau        conda-forge/linux-64::xorg-libxau-1.0.9-h7f98852_0
  xorg-libxdmcp      conda-forge/linux-64::xorg-libxdmcp-1.1.3-h7f98852_0
  xorg-libxext       conda-forge/linux-64::xorg-libxext-1.3.4-h7f98852_1
  xorg-libxrender    conda-forge/linux-64::xorg-libxrender-0.9.10-h7f98852_1003
  xorg-renderproto   conda-forge/linux-64::xorg-renderproto-0.11.1-h7f98852_1002
  xorg-xextproto     conda-forge/linux-64::xorg-xextproto-7.3.0-h7f98852_1002
  xorg-xproto        conda-forge/linux-64::xorg-xproto-7.0.31-h7f98852_1007
  xz                 conda-forge/linux-64::xz-5.2.5-h516909a_1
  yarp               robotology/linux-64::yarp-3.4.5-py39hb4e7e14_14
  ycm-cmake-modules  conda-forge/linux-64::ycm-cmake-modules-0.12.2-h9c3ff4c_0
  zlib               conda-forge/linux-64::zlib-1.2.11-h516909a_1010
  zstd               conda-forge/linux-64::zstd-1.5.0-ha95c52a_0


Proceed ([y]/n)?