gnu: Remove Tailon services and documentation.

The tailon package was removed in 63023deaf96bd0d90aba262b194bf1445ec5a0b6,
but the associated service and documentation weren’t, leading to `guix pull`
breaking.

Fixes guix/guix#2689.

* doc/guix.texi: Remove Tailon documentation.
* gnu/services/web.scm (tailon-service-type): Delete variable.
(tailon-configuration-file): Delete variable.
(tailon-configuration-file?): Delete variable.
(tailon-configuration-file-files): Delete variable.
(tailon-configuration-file-bind): Delete variable.
(tailon-configuration-file-relative-root): Delete variable.
(tailon-configuration-file-allow-transfers?): Delete variable.
(tailon-configuration-file-follow-names?): Delete variable.
(tailon-configuration-file-tail-lines): Delete variable.
(tailon-configuration-file-allowed-commands): Delete variable.
(tailon-configuration-file-debug?): Delete variable.
(tailon-configuration-file-http-auth): Delete variable.
(tailon-configuration-file-users): Delete variable
(tailon-configuration): Delete variable.
(tailon-configuration?): Delete variable.
(tailon-configuration-config-file): Delete variable.
(tailon-configuration-package): Delete variable.
* gnu/tests/web.scm (%test-tailon): Delete variable.

Change-Id: I3b507df8233b0440baa6a2bce4604b5813cb3bb0

1 files changed, 0 insertions, 108 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index 13665b568d7..0924aebf4ad 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -32940,114 +32940,6 @@ Defaults to @samp{#t}.
 @node Monitoring Services
 @subsection Monitoring Services
 
-@subsubheading Tailon Service
-
-@uref{https://tailon.readthedocs.io/, Tailon} is a web application for
-viewing and searching log files.
-
-The following example will configure the service with default values.
-By default, Tailon can be accessed on port 8080 (@code{http://localhost:8080}).
-
-@lisp
-(service tailon-service-type)
-@end lisp
-
-The following example customises more of the Tailon configuration,
-adding @command{sed} to the list of allowed commands.
-
-@lisp
-(service tailon-service-type
-         (tailon-configuration
-           (config-file
-             (tailon-configuration-file
-               (allowed-commands '("tail" "grep" "awk" "sed"))))))
-@end lisp
-
-
-@deftp {Data Type} tailon-configuration
-Data type representing the configuration of Tailon.
-This type has the following parameters:
-
-@table @asis
-@item @code{config-file} (default: @code{(tailon-configuration-file)})
-The configuration file to use for Tailon.  This can be set to a
-@dfn{tailon-configuration-file} record value, or any gexp
-(@pxref{G-Expressions}).
-
-For example, to instead use a local file, the @code{local-file} function
-can be used:
-
-@lisp
-(service tailon-service-type
-         (tailon-configuration
-           (config-file (local-file "./my-tailon.conf"))))
-@end lisp
-
-@item @code{package} (default: @code{tailon})
-The tailon package to use.
-
-@end table
-@end deftp
-
-@deftp {Data Type} tailon-configuration-file
-Data type representing the configuration options for Tailon.
-This type has the following parameters:
-
-@table @asis
-@item @code{files} (default: @code{(list "/var/log")})
-List of files to display.  The list can include strings for a single file
-or directory, or a list, where the first item is the name of a
-subsection, and the remaining items are the files or directories in that
-subsection.
-
-@item @code{bind} (default: @code{"localhost:8080"})
-Address and port to which Tailon should bind on.
-
-@item @code{relative-root} (default: @code{#f})
-URL path to use for Tailon, set to @code{#f} to not use a path.
-
-@item @code{allow-transfers?} (default: @code{#t})
-Allow downloading the log files in the web interface.
-
-@item @code{follow-names?} (default: @code{#t})
-Allow tailing of not-yet existent files.
-
-@item @code{tail-lines} (default: @code{200})
-Number of lines to read initially from each file.
-
-@item @code{allowed-commands} (default: @code{(list "tail" "grep" "awk")})
-Commands to allow running.  By default, @code{sed} is disabled.
-
-@item @code{debug?} (default: @code{#f})
-Set @code{debug?} to @code{#t} to show debug messages.
-
-@item @code{wrap-lines} (default: @code{#t})
-Initial line wrapping state in the web interface.  Set to @code{#t} to
-initially wrap lines (the default), or to @code{#f} to initially not
-wrap lines.
-
-@item @code{http-auth} (default: @code{#f})
-HTTP authentication type to use.   Set to @code{#f} to disable
-authentication (the default).  Supported values are @code{"digest"} or
-@code{"basic"}.
-
-@item @code{users} (default: @code{#f})
-If HTTP authentication is enabled (see @code{http-auth}), access will be
-restricted to the credentials provided here.  To configure users, use a
-list of pairs, where the first element of the pair is the username, and
-the 2nd element of the pair is the password.
-
-@lisp
-(tailon-configuration-file
-  (http-auth "basic")
-  (users     '(("user1" . "password1")
-               ("user2" . "password2"))))
-@end lisp
-
-@end table
-@end deftp
-
-
 @subsubheading Darkstat Service
 @cindex darkstat
 Darkstat is a packet sniffer that captures network traffic, calculates