Bincrafters-package-tools

Breaking Changes / Removed features
* Increasing `conan_package_tools` min version to `>=0.39.0` as 0.39.0 added support for `CONAN_GLOBAL_CONF`
* Remove Clang 3.9 builds from the default build matrix
* Visual Studio 2017 was dropped since GitHub Actions and Azure Pipelines are dropping support for it (see https://github.com/actions/virtual-environments/issues/4312)
* Remove `build_template_boost_default.py`, `build_template_boost_header_only.py`, `build_template_default.py`, `build_template_header_only.py` or `build_template_installer.py` files. `build.py` files that make use of those files will break. Migrate to use the auto-detect feature (or if you can't use the auto-detect feature for some reason, a custom `build.py` file that does not try to import these files).


Deprecated Features / Will be removed in a future release
* Support for AppVeyor CI is deprecated. AppVeyor does not allow dynamic matrix generations which we need for most modern features.
* Clang < 10 builds will be removed from the default build matrix
* GCC 4.9 builds will be removed from the default build matrix
* Apple Clang 10 builds will be removed from the default build matrix


Upcoming Features Early Notice
* Bincrafters Package Tools will start to use semantic versioning
* The usage of the "modern" Conan Docker Tools containers will be extended to Clang >= 10 builds (see https://github.com/conan-io/conan-docker-tools/tree/b693dc3507cf16e7ec5db50e002765420b747651/modern); this might cause incompatibilities with existing builds and setups
* Clang 13 builds will be added to the default build matrix
* Use the Conan 2.x behaviour to always use 2 profiles (host and build) - This might break old recipes


New Features
* Add GCC 11 and Clang 12 builds to the default build matrix
* Use "modern" Conan Docker Tools containers for GCC >= 11 and Clang >= 12 build jobs (see https://github.com/conan-io/conan-docker-tools/tree/b693dc3507cf16e7ec5db50e002765420b747651/modern)
* Add environment variable `BPT_MATRIX_DISCARD_DUPLICATE_BUILD_IDS`. Options: `true`/`false`, default: `true`. This does NOT YET what it says. Right now, this only has an effect for installer_only and header_only recipes when set to `false`. In those cases, you get the full build matrix, instead of a shortened build matrix. In the future, the matrix generation actually compares build IDs and discards jobs based on the IDs. (https://github.com/bincrafters/community/issues/1391)


Other Improvements
* Change the default remote URL to Bincrafters' Artifactory remote (it was still pointing to Bintray)
* Some more adjustment to support the `msvc` compiler model (though, it still does not work completely)
* Add Apple Clang -> XCode mappings for newer versions


Bugfixes
* Enable installing system packages also for Conan 2.x system package tools
* Do not set `CONAN_DOCKER_ENTRY_SCRIPT`, but append instead


Internal Improvements
* Allow getting the builder for autodetect builds without executing the builder
* Add Dependabot to repository


_______

Thanks to all the people that contributed to this release:
* [uilianries](https://github.com/uilianries)
* [grafikrobot](https://github.com/grafikrobot)
* [ericLemanissier](https://github.com/ericLemanissier)
* [jmarrec](https://github.com/jmarrec)

Bugfixes
* Fix: Correctly read environment variable BPT_MATRIX_SPLIT_BY_BUILD_TYPES

Breaking Changes / Removed features
* No support for the environment variable `BINTRAY_REPOSITORY` anymore to specify the repository name for a Conan repository on Bintray. Use `CONAN_REMOTE` for the URL+name of your remote(s) (+ potential `CONAN_UPLOAD` if download and upload remotes are different)
* No explicit support for Travis CI anymore; macOS jobs will start to run on GitHub Actions (if it exists)
* No explicit support for Circle CI anymore as it is untested and unused by Bincrafters for a very long time and does not support many features there anyway


Deprecated Features / Will be removed in a future release
* Support for repositories using the single-recipe layout. Even if you have just one Conan recipe pro repository, you can use the multi-recipe layout without any major disadvantages, but it streamlines our tooling.
* Environment variable `splitByBuildTypes` and `BPT_SPLIT_BY_BUILD_TYPES`, use `BPT_MATRIX_SPLIT_BY_BUILD_TYPES` instead to split build jobs by build type (`Debug`/`Release`) - possible values: `true`, `false`
* `build.py` files which make use of BPT's `build_template_boost_default.py`, `build_template_boost_header_only.py`, `build_template_default.py`, `build_template_header_only.py` or `build_template_installer.py` files. Migrate to use the autodetect feature.
* In the next release, Clang 3.9 won't be added to the build matrix by default anymore


Upcoming Features Early Notice
* In the next release, the following compilers will be added to the default build matrix: Visual Studio 2022 Preview, GCC 11, Clang 12


New Features
* Generate build jobs for GCC 10, Clang 10 and Clang 11 in the build matrix
* BPT checks now if the CI config file version is compatible with the currently used version of BPT. Sometimes new features require breakages.


Bugfixes
* Fix container image for Linux installer recipes run (mismatch between specified GCC version 7 and specified image `conanio/gcc8`)
* Fix matrix generation for installer and header_only packages in a CCI style repository

Internal Improvements
* Matrix generation: split-by-build-types is now dynamic instead of hard coded

* BREAKING CHANGE: Always enable Conan revisions in the client
* BREAKING CHANGE: Replace gcc7-centos6 container with the gcc8 container for building Linux installer packages
* When neither AppVeyor nor Azure Pipelines are configured, Windows builds will run on GitHub Actions
* Provide more disk space for Linux jobs on GitHub Actions

* When neither Travis nor Azure Pipelines are configured, run macOS build jobs on GitHub Actions

* More work to support dynamic matrix generation on AZP