CEVE

NAME

ceve − parse package metadata

SYNOPSIS

ceve [−h] [−v] [−c pkgspec] [−r pkgspec] [−−depth=n] [−T format] [−G
graph type] [−o filename] input-spec [input-spec...]

DESCRIPTION

Ceve is a generalized metadata parser. It reads package specifications, extracts package metadata from them, performs some manipulations, and outputs the package metadata in one of several formats.

input-spec is a url specifying the input format and the file to get the input from. For a possible list of schemes, see the −t parameter.

Some examples of URLs:

	.		deb://Packages.gz (the Debian file packages.gz in the current directory)
	.		cudf:///home/examples/cudf/test.cudf (the CUDF file /home/examples/cudf/test.cudf)

OPTIONS

MISC OPTIONS
−h, −−help

This option displays the help message.

−v, −−verbose

Be verbose. This option can be repeated for more verbosity.

−−version

Show program’s version and exit.

−−progress

Print progress bars.

−−timers

Print timing information.

−−quiet

Do no print any messages.

INPUT OPTIONS
Dose3 accepts files compressed with gzip(1) or bzip2(1), depending on compile-time options.
−t input-spec

Select the input type. Possible values are:

	.		cudf Cudf file format
	.		pef PEF file format. The PEF format (Package Exchange Format) is a generic 822 file format used to encode package dependencies. deb, opam, debsrc and edsp are all based on the pef format
	.		csw OpenCSW Solaris packages binary format
	.		opam Opam Package universe in Opam/PEF format. This format is a 822 textual format encoding the opam universe.
	.		deb for Debian binary package files, also known as Packages files.
	.		debsrc for Debian source package files, also knows as Sources files.
	.		edsp apt-get External Dependency Solver Protocol
	.		hdlist RPM hdlists. Binary file format.
	.		synthesis urpmi synthesis hdlists. XML Based format
	−−trim		Consider only installable packages.

−−latest n

Consider only the latest −n most recent versions of each package, older versions of packages are ignored.

−c, −−cone=vpkglist

The match of an atomic dependency (a package name p possibly together with a version constraint c) is the set of all packages in the repository with name p, and a version that satisfies the constraint c. The dependency cone of a package p is the set of all matches of all atomic dependencies of p, together with their respective dependency cones. The package specification pkgspec is a list of packages (separated by a semicolon), where each package is specified as follows: (name,version).

This option extracts the union of the dependency cones of all packages selected by vpkglist.

Example: =over 12

−c ’golang−golang−x−tools (=
1:0.0~git20150716.0.87156cb+dfsg1−4),golang−golang−x−tools−dev’
−r, −−rcone=vpkglist

Using the same syntax as in −c, this option use the reverse dependency relation to make the transitive closure.

−−depth n

In combination with the −c or −r options, this specifies the maximum depth for the transitive closure.

−−request installation-request

Specifies an installation request of the form "install: vpkglist" or "remove: vpkglist" or "upgrade: vpkglist" where vpkglist is a list of (real) packages possibly associated with a constraint. Ex.: bash (< 2.0), exim (= 3.1−debian1). This option can be repeated to specify install, remove and upgrade actions.

Examples:
−−request "install: bash (< 2.0), exim (= 3.1−debian1)"
−−request "upgrade: apt-cudf"

OUTPUT OPTIONS
−o, −−outfile=filename

Instead of stdout, send output to the file filename.

−d, −−outdir=directory

Set the output directory (default current directory)

−−dot

Save the explanation graph (one for each package) in dot format.

−G graph type

Specifies the graph type format to compute. This option must be used together with the option −T dot|gml|grml. Default is syn. Possible values are:

	.		syn for the syntactic graph where disjunctions nodes and conflicts are explicitly added to the graph.
	.		pkg for the package graph where all dependencies are threated uniformely and conflicts are not added to the graph.
	.		strdeps the strong dependency graph. A package p strong depends on q iff p cannot be installed if q is not installed.
	.		strcnf
	.		conj the conjunctive graph where only conjunctive dependencies are considered.
	.		dom

−T format

Specifies the output format to use. Default is cnf. Possible values are:

	.		cnf output in CNF format.
	.		dimacs output in DIMACS format for CNF formulae.
	.		cudf pretty-printed output in an RFC 822−like format
	.		deb binary packages in deb822 format.
	.		debsrc source packages in deb822 format.
	.		dot a graph in Dot/GraphViz format.
	.		gml a graph in GML format.
	.		grml a graph in GraphML format.
	.		table plain text output of three integer values: the universe size, the number of edges in the dependency graph, the number of conflicts in the universe.

DEBIAN SPECIFIC OPTIONS
Multi-arch annotations are handled by ceve. Packages whose’s architecture is neither the native architecture nor in the list of foreign architectures (see below) are ignored.
−−deb−native−arch=name

Specify the native architecture. The default behavior is to deduce the native architecture from the first package stanza in the input that has an architecture different from all.

−−deb−foreign−archs=name [,name] ...

Specify a comma-separated list of foreign architectures. The default is an empty list of foreign architectures.

−−deb−ignore−essential

By default all essential package are considered as a dependency of all packages in the universe. This option allows the user to ignore essential packages.

−−deb−host−arch=name

Native/cross compile host architecture, defaults to native architecture.

−−deb−builds−from

Add builds-from relationship of binary packages on source packages as dependency. This allows one to create graphs for bootstrapping purposes.

−P, −−deb−profiles=name[,name...]

Comma separated list of activated build profiles.

−−deb−drop−b−d−indep

Drop Build-Depends-Indep dependencies from Debian source packages.

−−deb−drop−b−d−arch

Drop Build-Depends-Arch dependencies from Debian source packages.

EXAMPLES

Find all the reverse binary dependencies of the package patchutils:

        dose−ceve −−deb−native−arch amd64 −r patchutils −T deb \
                deb:///var/lib/apt/lists/*_dists_sid_main_binary−amd64_Packages \
                | grep−dctrl −n −s Package '' | sort −u

Find all the source packages that (directly or indirectly) build depend on patchutils:

        dose−ceve −T debsrc −−deb−native−arch=amd64 −r patchutils \
                debsrc:///var/lib/apt/lists/*_dists_sid_main_source_Sources \
                deb:///var/lib/apt/lists/*_dists_sid_main_binary−amd64_Packages \
                | grep−dctrl −n −s Package '' | sort −u

Find the source packages (−T debsrc) that have in a relation builds-from with all the binary package in the reverse dependency cone of libssl-dev (a specific version constraint).

  dose−ceve −−deb−builds−from −−deb−native−arch=amd64 −T debsrc \
  −r 'libssl−dev (>= 0.9.8)' deb://Sid−amd64−Packages−050812.bz2 \
  debsrc://Sid−Sources−050812.bz2