Conan

------

- Support for OSX High Sierra
- Reverted concurrency locks to counters, removed ``psutil`` dependency
- Implemented migration for settings.yml (for new VS toolsets)
- Fixed encoding issues in conan_server

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- Feature: Support for WindowsStore (WinRT, UWP)
- Feature: Support for Visual Studio Toolsets.
- Feature: New ``boost-build`` generator for generic bjam (not only Boost)
- Feature: new ``tools.PkgConfig`` helper to parse pkg-config (.pc) files.
- Feature: Added ``self.develop`` conanfile variable. It is true for ``conan create`` packages and for local development.
- Feature: Added ``self.keep_imports`` to avoid removal of imported files in the ``build()`` method. Convenient for re-packaging.
- Feature: Autodected MSYS2 for ``SystemPackageTool``
- Feature: ``AutoToolsBuildEnvironment`` now auto-loads ``pkg_config_path`` (to use with ``pkg_config`` generator)
- Feature: Changed search for profiles. Profiles not found in the default ``profiles`` folder, will be searched for locally. Use ``./myprofile`` to force local search only.
- Feature: Parallel builds for Visual Studio (previously it was only parallel compilation within builds)
- Feature: implemented syntax to check options with ``if "something" in self.options.myoption``
- Fix: Fixed CMake dependency graph when using TARGETS, that produced wrong link order for transitive dependencies.
- Fix: Trying to download the ``exports_sources`` is not longer done if such attribute is not defined
- Fix: Added output directories in ``cmake`` generator for RelWithDebInfo and MinSizeRel configs
- Fix: Locks for concurrent access to local cache now use process IDs (PIDs) to handle interruptions and inconsistent states. Also, adding messages when locking.
- Fix: Not remove the .zip file after a ``conan config install`` if such file is local
- Fix: Fixed ``CMake.test()`` for the Ninja generator
- Fix: Do not crete local conaninfo.txt file for ``conan install <pkg-ref>`` commands.
- Fix: Solved issue with multiple repetitions of the same command line argument
- BugFix: Don't rebuild conan created (with conan-create) packages when ``build_policy="always"``
- BugFix: ``conan copy`` was always copying binaries, now can copy only recipes
- BugFix: A bug in download was causing appends insteads of overwriting for repeated downloads.
- Development: Large restructuring of files (new cmd and build folders)
- Deprecation: Removed old CMake helper methods (only valid constructor is ``CMake(self)``)
- Deprecation: Removed old ``conan_info()`` method, that was superseded by ``package_id()``




**Breaking changes**
----------------------

- CMAKE_LIBRARY_OUTPUT_DIRECTORY definition has been introduced in ``conan_basic_setup()``, it will send shared libraries .so
to the ``lib`` folder in Linux systems. Right now it was undefined.
- Profile search logic has slightly changed. For ``-pr=myprofile``, such profile will be searched both in the default folder
and in the local one if not existing. Use ``-pr=./myprofile`` to force local search only.
- The ``conan copy`` command has been fixed. To copy all binaries, it is necessary to explicit ``--all``, as other commands do
- The only valid use of CMake helper is ``CMake(self)`` syntax
- If using ``conan_info()``, replace it with ``package_id()``

------

- BugFix: Downloading (``tools.download``) of files with ``content-encoding=gzip`` were raising an exception because the downloaded content length didn't match the ``content-length``

😈 Happy Halloween!

-------

This is a big release, with many important and core changes. Also with a huge number of community contributions, thanks very much!

**Important!**, see the "Breaking changes" at the end of the document.

- Feature: Major revamp of most conan commands, making command line arguments homogeneous. Much better development flow adapting to user layouts, with ``install-folder``, ``source-folder``, ``build-folder``, ``package-folder``.
- Feature: new ``deploy()`` method, useful for installing binaries from conan packages.
- Feature: Implemented some **concurrency** support for the conan local cache. Parallel ``conan install ``and ``conan create`` for different configurations should be possible.
- Feature: options now allow patterns in the command line: ``-o *:myoption=myvalue`` applies to all packages.
- Feature: new ``pc`` generator that generates files from dependencies for ``pkg-config``
- Feature: new ``Meson`` helper, similar to ``CMake`` for Meson build system. Works well with ``pc`` generator.
- Feature: Support for read-only cache with ``CONAN_READ_ONLY_CACHE`` environment variable
- Feature: new ``visual_studio_multi`` generator to load Debug/Release, 32/64 configs at once
- Feature: new ``tools.which`` helper to locate executables
- Feature: new ``conan --help`` layout
- Feature: allow to override compiler version in ``vcvars_command``
- Feature: ``conan user`` interactive (and not exposed) password input for empty ``-p`` argument
- Feature: Support for ``PacManTool`` for ``system_requirements()`` for ArchLinux
- Feature: Define VS toolset in ``CMake`` constructor and from environment variable CONAN_CMAKE_TOOLSET
- Feature: ``conan create`` now accepts ``werror`` argument
- Feature: ``AutoToolsBuildEnvironment`` can use ``CONAN_MAKE_PROGRAM`` env-var to define make program
- Feature: added xcode9 for apple-clang 9.0, clang 5 to default settings.yml
- Feature: deactivation of ``short_paths`` in Windows 10 with Py3.6 and long path support is automatic
- Feature: show unzip progress by percentage, not by file (do not clutters output)
- Feature: do not use ``sudo`` for system requirements if already running as root
- Feature: ``tools.download`` able to use headers/auth
- Feature: conan does not longer generate bytecode from recipes (no more .pyc, and more efficient)
- Feature: add parallel argument to ``build_sln_command`` for VS
- Feature: Show warning if vs150comntools is an invalid path
- Feature: ``tools.get()`` now has arguments for hash checking
- Fix: upload pattern now accepts ``Pkg/*``
- Fix: improved downloader, make more robust, better streaming
- Fix: ``tools.patch`` now support adding/removal of files
- Fix: The ``default`` profile is no longer taken as a base and merged with user profile. Use explicit ``include(default)`` instead.
- Fix: Properly manage x86 as cross building with autotools
- Fix: ``tools.unzip`` removed the unnecessary long-paths check in Windows
- Fix: ``package_info()`` is no longer executed at install for the consumer conanfile.py
- BugFix: source folder was not being correctly removed when recipe was updated
- BugFix: fixed ``CMAKE_C_FLAGS_DEBUG`` definition in ``cmake`` generator
- BugFix: ``CMAKE_SYSTEM_NAME`` is now Darwin for iOS, watchOS and tvOS
- BugFix: ``xcode`` generator fixed handling of compiler flags
- BugFix: pyinstaller hidden import that broke .deb installer
- BugFix: ``conan profile list`` when local files matched profile names

**Breaking changes**
----------------------

This is an important release towards stabilizing conan and moving out of beta. Some breaking changes have been done, but mostly to command line arguments, so they should be easy to fix. Package recipes or existing packages shouldn't break.
Please **update**, it is very important to ease the transition of future stable releases. Do not hesitate to ask questions, or for help, if you need it. This is a possibly not complete list of things to take into account:

- The command ``conan install`` doesn't accept ``cwd`` anymore, to change the directory where the generator
files are written, use the ``--install-folder`` parameter.
- The command ``conan build`` now requires the path to the ``conanfile.py`` (optional before)
- The command ``conan package`` not longer re-package a package in the local cache, now it only operates in a user local folder. The recommended way to re-package a package is using ``conan build`` and then ``conan export-pkg``.
- Removed ``conan package_files`` in favor of a new command ``conan export-pkg``. It requires a local recipe with a ``package()`` method.
- The command ``conan source`` no longer operates in the local cache. now it only operates in a user local folder. If you used ``conan source`` with a reference to workaround the concurrency, now it natively supported, you can remove the command call and trust concurrent install processes.
- The command ``conan imports`` doesn't accept ``-d, --dest`` anymore, use ``--imports-folder`` parameter instead.
- If you specify a profile in a conan command, like conan create or conan install the base profile `~/.conan/profiles/default` won’t be applied.
Use explicit ``include`` to keep the old behavior.

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- Feature: ``conan config install <url>`` new command. Will install remotes, profiles, settings, conan.conf and other files into the local conan installation. Perfect to synchronize configuration among teams
- Feature: improved traceback printing when errors are raised for more context. Configurable via env
- Feature: filtering out non existing directories in ``cpp_info`` (include, lib, etc), so some build systems doesn't complain of them.
- Feature: Added include directories to ResourceCompiler and to MIDL compiler in ``visual_studio`` generator
- Feature: new ``visual_studio_legacy`` generator for Visual Studio 2008
- Feature: show path where manifests are locally stored
- Feature: ``replace_in_file`` now raises error if replacement is not done (opt-out parameter)
- Feature: enabled in conan.conf ``[proxies]`` section ``no_proxy=url1,url2`` configuration (to skip proxying for those URLs), as well as ``http=None`` and ``https=None`` to explicitely disable them.
- Feature: new conanfile ``self.in_local_cache`` attribute for conditional logic to apply in user folders local commands
- Feature: ``CONAN_USER_HOME_SHORT=None`` can disable the usage of ``short_paths`` in Windows, for modern Windows that enable long paths at the system level
- Feature: ``if "arm" in self.settings.arch`` is now a valid check (without casting to str(self.settings.arch))
- Feature: added ``--cwd`` argument to ``conan source`` local method.
- Fix: unzip crashed for 0 Bytes zip files
- Fix: ``collect_libs`` moved to the ``tools`` module
- Bugfix: fixed wrong regex in ``deps_cpp_info`` causing issues with dots and dashes in package names
- Development: Several internal refactors (tools module, installer), testing (using VS2015 as default, removing VS 12 in testing). Conditional CI in travis for faster builds in developers, downgrading to CMake 3.7 in appveyor
- Deprecation: ``dev_requires`` have been removed. Superseded by ``build_requires`` while not documented at all.
- Deprecation: sources tgz files for exported sources no longer contain ".c_src" subfolder. Packages created with 0.27 will be incompatible with conan < 0.25

=====

- Bugfix: fixed parsing of conanbuildinfo with package names containing a dot.
- Feature: added apple-clang 9.0 to default settings.
- Fix: conan copy command now supports symlinks.
- Fix: fixed removal of "export_source" folder when files have no permissions