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edos-pscheck

man page of edos-pscheck

edos-pscheck: Check satisfiability of pkgsrc package dependencies

NAME
Edos-pscheck - Check satisfiability of pkgsrc package dependencies

SYNOPSIS

edos-pscheck [option] ... pkg-summary-file

DESCRIPTION

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.

OPTIONS

-explain Explain the results -rules Print generated rules -failures Only show failures -successes Only show successes -base file 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 -help, --help Display this list of options

EXAMPLE

Check which packages in a particular distribution are not installable and why: edos-pscheck -failures -explain pkg_summary where pkg_summary is the file pertaining to that distribution.
AUTHOR
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 Treinen.
SEE ALSO
<//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. EDOS-PSCHECK(1)
 
 
 

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