proj: support for conan v2

[paulharris]

A nice cmake project, but this is consumed a lot of other difference recipes.
I wonder about bin paths, virtual run envs and other such things will work properly with this new recipe.
How best to test?

closes #14090
closes #13422

[prince-chrismc]

Seems like the deps need some love

[ghost]

I detected other pull requests that are modifying proj/all recipe:

• (#13422) bump proj 9.1.0 #14090

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prsso don't hesitate to report issues/improvements there.

[paulharris]

Question: VTK imports proj as
find_package(LibPROJ (perhaps flags here))
and LibPROJ::LibPROJ
and checks LibPROJ_MAJOR_VERSION

The recipe exports find_package(proj) and PROJ::proj and proj_MAJOR_VERSION

What is the best way to create an alias for this? Or should we patch VTK instead?

Note, same problem exists with libharu
VTK: LibHaru LibHaru::LibHaru
conan: libharu libharu::libharu

[SpaceIm]

sqlite3 must be added to build requirements unconditionally now.

[SpaceIm]

@paulharris please consider paulharris#4

[paulharris]

I don't cross-compile so I'll trust that you know what you are doing!

[SpaceIm]

Simplification in 9.0.1 patch, needs to be done in all patches. Basically, except CONAN_PKG::sqlite3 to replace by SQLite::SQLite3, there was no other modification needed in these patches (just maybe a find_package for nlohmann_json in old proj versions).

[paulharris]

@SpaceIm see changes to 6.x.x patch... you mean like this?
Should we specify MODULE or CONFIG in the find_package() calls?

[conan-center-bot]

Conan v1 pipeline

All green in build 24 (8b06e6de14ff0421d65d677690655aea9a8f371b):

• proj/6.3.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.2.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.1.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/7.2.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/9.1.0@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.1.0@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.0.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.2.0@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/8.0.0@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/9.0.1@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'
  

• proj/9.0.0@:
  All packages built successfully! (All logs)

  🔸 Informative: This recipe is not ready for Conan v2

  _{We have started the migration process to Conan v2 and exporting recipes successfully will be required in the future.
  This is just an informative note to gain awareness about the process, no need to take any action. The plan is to enforce smaller steps that are easier to fix and, eventually, this conan export step will work.
  See the recipe migration guide to know more about the changes required.}

  ERROR: Error loading conanfile at '/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py': Unable to load conanfile in /home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py
    File "<frozen importlib._bootstrap_external>", line 728, in exec_module
    File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    File "/home/conan/w/prod_cci_PR-13795/recipes/proj/all/conanfile.py", line 3, in <module>
      from conans.tools import stdcpp_library
  ModuleNotFoundError: No module named 'conans.tools'