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.Dd Apr 26, 2017
.Dt CHICKEN-UNINSTALL 1
.Os
.Sh NAME
.Nm chicken-uninstall
.Nd uninstall extension library
.Sh SYNOPSIS
.Nm
.Op Ar OPTION ...
.Op Ar NAME ...
.Sh DESCRIPTION
.Nm
removes one or more already installed extension
libraries for the CHICKEN Scheme system.
.Ar PATTERN
may be a regular expression naming multiple extensions or just an extension name.
.Pp
The program accepts following arguments:
.Bl -tag -width Ds
.It Fl h , Fl help
Show usage and exit.
.It Fl version
Show version and exit.
.It Fl force
Don't ask, just delete whatever matches.
.It Fl match
Treat
.Ar NAME
as a glob pattern.
.It Fl s , Fl sudo
Use external program to elevate privileges for deleting files.
The program defaults to
.Xr sudo 8
but can be overridden with
.Ev SUDO
environment variable.
.It Fl host
When cross-compiling, only uninstall host extensions.
.It Fl target
When cross-compiling, only uninstall target extensions.
.El
.Sh ENVIRONMENT
The following environment variables change the behaviour of
.Nm Ns :
.Bl -tag -width CHICKEN_INSTALL_REPOSITORY
.It Ev CHICKEN_INSTALL_REPOSITORY
The path where extension libraries are installed. Defaults to the
package library path selected during configuration
.Pq usually /var/lib/chicken/<binary-version> .
.It Ev SUDO
The command to execute when using
.Fl s
flag in command. If not provided, defaults to
.Xr sudo 8 .
.El
.Sh EXIT STATUS
.Ex -std
.Sh SEE ALSO
.Xr chicken 1 ,
.Xr chicken-install 1 ,
.Xr chicken-status 1
.Pp
More information can be found in the
.Lk http://wiki.call-cc.org/manual/index "CHICKEN User's Manual".
.Sh AUTHORS
.An The CHICKEN Team
.Sh BUGS
Submit bug reports by e-mail to
.Mt chicken-janitors@nongnu.org