Edos-pscheck - Check satisfiability of pkgsrc package dependencies
edos-pscheck [option] ... pkg-summary-file
edos-pscheck reads package descriptions from a file in the pkg_summary
format of NetBSD. We say that a package is identified by the pair
consisting of the package name and of the package version.
A package (called goal) is called installable with respect to a set of
packages if there exists a subset of the packages that
- contains at most one version for each package name
- contains the goal package (in any version, or a specific version)
- all packages of the subset have their dependencies and conflicts
satisfied in this subset.
Edos-psmcheck checks whether every package in the set is installable
with respect to the input set of packages. Specific versions can be
specified by following the package name with the sign '=' and the
version of the package (for instance, 'xemacs21=21.4.17-1'). If no
package name is given as argument then all packages of the input set
are checked for satisfiability.
The constraint solving algorithm is complete, that is it finds a
solution whenever there exists one, even for multiple disjunctive
dependencies and deep package conflicts. This problem is
computationally infeasible in theory (that is, NP-complete), but can in
practice be solved very efficiently.
Explain the results
-rules Print generated rules
Only show failures
Only show successes
Specifiy an additional file providing packages that are not
checked but used for resolving dependencies
-quiet Supress warnings and progress/timing messages
-xml Output results in XML format
Display this list of options
Check which packages in a particular distribution are not installable
edos-pscheck -failures -explain pkg_summary
where pkg_summary is the file pertaining to that distribution.
Edos-pscheck has been written by Jerome Vouillon and Jaap Boender for
the EDOS and Mancoosi projects. This man-page has been compiled by Ralf
<http://www.edos-project.org> is the home page of the EDOS project.
edos-debcheck(1) and edos-rpmcheck(1) are the analogous tool for debian
and rpm packages.