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These are some known issues with rpg, their causes, and notes on plans for
addressing them. This list intentionally does not include missing features but
rather things that you are likely to run into during the course of using rpg.
- Packages with libraries or executables that assume they are installed under a
directory-per-package structure and attempt to read files outside of their
containing lib or bin directory will fail to locate those files. This
typically manifests with library files that attempt to read a VERSION file
from the package's root directory.
The rpg-shit-list program is a crappy hack that attempts to patch certain
popular libraries up during installation.
There is as of yet no compelling proposed solution to this issue beyond
requesting (preferably via patch) that package maintainers avoid making
assumptions about the locations of library and executable files where
possible.
- Packages with libraries or executables that call the Rubygems
'gem(<name>, <version>)' method to declare and load dependent packages at
runtime will fail to locate the package (unless the gem is installed within
rubygems environment). It is very rarely appropriate or beneficial for
libraries to make these sort of calls explicitly since rubygems handles this
by installing wrapper executables and also when loading packages via its
Kernel#require hooks.
There is no planned solution to this issue beyond asking project maintainers
to avoid the gem method where not truly warranted.
UPDATE: Josh Peek's gem_stub program <http://github.com/josh/gem_stub> can be
used to install gemspec files for rpg installed packages. This functionality
may make its way into the rpg codebase.
- There is currently no (straightforward) way to manually resolve exclusive
version conflicts during install. The install fails with a message stating
that some "packages cannot be resolved". The most typical cause of exclusive
version conflicts is when two or more packages being installed (or already
installed) specify incompatible versions of package dependencies.
An interactive version resolution system is planned.
- The rpg-uninstall program performs no dependency checking or recursive
uninstallation of packages. Uninstalling packages that other packages depend
on will result in an inconsistent environment.
Support for dependency aware uninstallation is planned.
- Using rpg with a root-owned / system ruby requires root privileges unless
a great many RPGXXX variables are tuned via rpg-config. Using rpg with a
system ruby is not recommended at this time. Use with rvm or custom /
non-system ruby installations for now.
Full support for all of the following is planned: 1.) installing libraries
into a system ruby environment, 2.) automatic privilege-deescalation on
operations not requiring superuser privileges, and 3.) installing under
multiple custom/configurable root-owned locations.
- Extension libraries that rely on the `make install' target to perform custom
tasks may not be installed or function properly. It is assumed that extensions
produce one or more shared object files; rpg installs these manually -- without
invoking the `make install` target -- due to issues with tracking files
installed.
- Some really awesome features of Rubygems are not yet supported. These include:
installing packages with their development dependencies, installing
pre-release packages, and installing packages from multiple source
repositories. All of these features are planned and fairly high priority.
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