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| author | Jeffery To <jeffery.to@gmail.com> | 2020-04-01 22:11:07 +0800 |
|---|---|---|
| committer | Jeffery To <jeffery.to@gmail.com> | 2020-04-02 14:57:30 +0800 |
| commit | c37b15e1c49cf27de8f34f43e93a7a5c184be9e0 (patch) | |
| tree | a009f48d54bf7599950fbf6619004d9ef413d90e /lang/python/python-packages/README.md | |
| parent | 3732cab3dfe711f9a445b1abff61178fd7c5519e (diff) | |
python-libraries: Remove Python 2-only packages
These are either libraries that backport Python 3 features for Python 2
programs, or libraries that have not had Python 3 variants added to them
by anyone.
These packages will be added to the abandoned packages feed.
Signed-off-by: Jeffery To <jeffery.to@gmail.com>
Diffstat (limited to 'lang/python/python-packages/README.md')
| -rw-r--r-- | lang/python/python-packages/README.md | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/lang/python/python-packages/README.md b/lang/python/python-packages/README.md deleted file mode 100644 index 3c09d8eb6..000000000 --- a/lang/python/python-packages/README.md +++ /dev/null @@ -1,72 +0,0 @@ -This package allows users to package python modules without creating package -Makefiles for each individual module and their dependencies. It provides a -way making packaging python packages faster and may also facilitate the process -of developing Makefiles for new python packages - -This is a raw DEVEL only package. Using it may entail a lot of implementation -details and you may need to resolve target dependencies and package details on -your own - -- Third party python packages may depend on features not included in e.g. - python-light -- Some python modules may require host install of another module to progress, - e.g. target cryptography requires host cffi -- Some python modules have external C library dependencies, e.g. pyOpenSSL - requires openssl libs -- Some packages may have an autoconf configure script whose arguments we - cannot control with pip and has to be passed on (hacked) by overriding some - environment variables - -## How it works - -1. Install host modules required for building target modules -2. Install each target module to separate directories -3. Install another copy of modules for cleanup purposes to make list of - installed files to be removed from target modules installed in step 2 - -Why should it be so - -1. Installing target cryptography requires host installation of cffi module -2. cryptography requires setuptools and pip will install its own copy with - --ignore-installed. When PACKAGE_python-setuptools is also selected, opkg - will complain of data file clashes if it was not removed here. - -Pip will handle dependency requirements of python modules, but external -dependencies like c libraries has to be prepared by the build system. The -issue is that there is currently no way to express such dependencies, thus may -cause build failure, e.g. pycrypto requires the presence of libgmp to build -successfully. - -## Tips - -If something goes wrong, we can add additional arguments to pip command -line to check the detailed build process. Some useful arguments may be - -- -v, for verbose output. Repeat this option if the current level of - verbosity is not enough -- --no-clean, for preserving pip build dir on build failure - -## Examples - -tornado (python-only module) - - CONFIG_PACKAGE_python-packages=y - CONFIG_PACKAGE_python-packages-list="tornado==4.4.2" - -cryptography (requires installation of host modules and cleanup on target modules) - - CONFIG_PACKAGE_python-packages=y - CONFIG_PACKAGE_python-packages-list-host="cffi" - CONFIG_PACKAGE_python-packages-list="cryptography" - CONFIG_PACKAGE_python-packages-list-cleanup="setuptools" - -pycrypto 2.7a1 (python module with autoconf configure script; depends on -libgmp; broken wmmintrin.h). 2.6.1 does not work because of a flaw in -the setup.py hardcoding host include directory - - CONFIG_PACKAGE_libgmp=y - CONFIG_PACKAGE_python-packages=y - CONFIG_PACKAGE_python-packages-list="https://github.com/dlitz/pycrypto/archive/v2.7a1.tar.gz" - CONFIG_PACKAGE_python-packages-envs="ac_cv_header_wmmintrin_h=no build_alias=$(GNU_HOST_NAME) host_alias=$(GNU_TARGET_NAME) target_alias=$(GNU_TARGET_NAME)" - CONFIG_PACKAGE_python-packages-extra-deps="libgmp.so.10" - |
