diff -Nru polymake-4.3/debian/changelog polymake-4.3/debian/changelog
--- polymake-4.3/debian/changelog	2021-01-20 11:13:08.000000000 +0000
+++ polymake-4.3/debian/changelog	2021-01-30 00:45:56.000000000 +0000
@@ -1,3 +1,11 @@
+polymake (4.3-3) unstable; urgency=medium
+
+  * Disable relative volume test when flint is missing (Closes: #981252).
+  * Bug fix: "man page mentions outdated file argument", thanks to Joachim
+    Zobel for the report, and Benjamin Lorenz for the update (Closes: #977722).
+
+ -- David Bremner <bremner@debian.org>  Fri, 29 Jan 2021 20:45:56 -0400
+
 polymake (4.3-2) unstable; urgency=medium
 
   * Source only upload
diff -Nru polymake-4.3/debian/patches/debian-changes polymake-4.3/debian/patches/debian-changes
--- polymake-4.3/debian/patches/debian-changes	1970-01-01 00:00:00.000000000 +0000
+++ polymake-4.3/debian/patches/debian-changes	2021-01-30 00:45:56.000000000 +0000
@@ -0,0 +1,16 @@
+This is an autogenerated patch header for a single-debian-patch file. The
+delta against upstream is either kept as a single patch, or maintained
+in some VCS, and exported as a single patch instead of more manageable
+atomic patches.
+
+--- polymake-4.3.orig/apps/polytope/rules/rational.rules
++++ polymake-4.3/apps/polytope/rules/rational.rules
+@@ -62,7 +62,7 @@ property N_01POINTS : Int;
+ # The value is encoded as a map collecting the coefficients of various roots encountered in the sum.
+ # For example, {(3 1/2),(5 7)} represents sqrt{3}/2 + 7 sqrt{5}.
+ # If the output is not satisfactory, please use a symbolic algebra package.
+-# @example The following prints the 2-dimensional volume of a centered square with side length 2 embedded in the 3-space (the result is 4):
++# @example [require bundled:flint] The following prints the 2-dimensional volume of a centered square with side length 2 embedded in the 3-space (the result is 4):
+ # > $M = new Matrix([1,-1,1,0],[1,-1,-1,0],[1,1,-1,0],[1,1,1,0]);
+ # > $p = new Polytope<Rational>(VERTICES=>$M);
+ # > print $p->RELATIVE_VOLUME;
diff -Nru polymake-4.3/debian/patches/series polymake-4.3/debian/patches/series
--- polymake-4.3/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ polymake-4.3/debian/patches/series	2021-01-30 00:45:56.000000000 +0000
@@ -0,0 +1 @@
+debian-changes
diff -Nru polymake-4.3/debian/polymake.1 polymake-4.3/debian/polymake.1
--- polymake-4.3/debian/polymake.1	2021-01-20 11:13:08.000000000 +0000
+++ polymake-4.3/debian/polymake.1	2021-01-30 00:45:56.000000000 +0000
@@ -1,94 +1,93 @@
-.TH POLYMAKE "1" "January 2016" "polymake 3.0" "User Commands"
+.TH POLYMAKE "1" "January 2021" "polymake 4.3" "User Commands"
 .SH NAME
 polymake \- tool for algorithmic treatment of polytopes and polyhedra
+.SH SYNOPSIS
+\fBpolymake\fR [\fB-dv\fR] [\fB-A\fR|\fB-a\fR \fIapplication\fR] [\fB--reconfigure\fR] 
+         [\fB--config-path\fR \fIfilename\fR|\fBuser\fR[\fB=\fR\fIdirectory\fR]]
+         [\fB--no-config\fR] [\fB--ignore-config\fR] 
+         [\fB--script\fR|\fB--iscript\fR [\fIapplication\fR\fB::\fR]\fIscript_file arguments ...\fR]
+         [\fB\-\-touch\fR \fIdata_file\fR [ \fIdata_file ...\fR ]]
+         [\fB-\fR]
 .SH DESCRIPTION
-usage: polymake [options] [arguments]
-
-called without arguments:
-.IP
-start an interactive shell
-
+polymake is open source software for research in polyhedral geometry. It deals with polytopes, polyhedra, and fans as well as simplicial complexes, matroids, graphs, tropical hypersurfaces, and various other objects.
+When called without arguments it will start an interactive shell, use \fBhelp;\fR for a very short introduction.
 .SH ARGUMENTS
-.HP
+.TP
 \fB\-\-help\fR
-.IP
-print help text and exit
-.HP
+print help text and exit.
+.TP
 \fB\-\-version\fR
-.IP
-print the version number, copyright notice, and exit
-
-.HP
-[\fB\-\-script\fR] [application::]script_file
-.IP
-execute the perl script in the file
-If application prefix is specified, this application is loaded
+print the version number, copyright notice, and exit.
+.TP
+[\fIapplication\fR\fB::\fR]\fIscript_file\fR
+execute the perl script in the file.
+If an application prefix is specified, this application is loaded
 and the script file is looked up in its script directory.
-Prefix none:: suppresses loading any applications before starting
-the script.
-.HP
-\fB\-\-script\fR [application::]script_file arguments ...
-.IP
-execute the perl script in the file, passing the arguments in @ARGV
-.HP
-\&'script text'
-.IP
-interpret the string as a perl expression
-.HP
-\-
-.IP
-read and execute the commands from the standard input
-.HP
-file PROPERTY | METHOD [ ... ]
-.IP
-the compatibility mode with polymake <= 2.3:
-read the object from the data file, print the properties or
-run the user methods
-.HP
-function ARG ...
-.IP
-simplified syntax for a user function call; arguments can be data files
-and numerical or string constants
-.HP
-\fB\-\-touch\fR file [ file ... ]
-.IP
+.TP
+\fB\-\-script\fR [\fIapplication\fR\fB::\fR]\fIscript_file arguments ...\fR
+execute the perl script in the file, passing the arguments in \fB@ARGV\fR.
+.TP
+\fB\-\-iscript\fR [\fIapplication\fR\fB::\fR]\fIscript_file arguments ...\fR
+execute the perl script in the file, which may contain interactive commands, passing the arguments in \fB@ARGV\fR.
+.TP
+\&\fI'script text'\fR
+interpret the string as an inline polymake/perl script.
+.TP
+\fB\-\fR
+read and execute the commands from the standard input.
+standard output and error streams are not redirected.
+.TP
+\fB\-\-touch\fR \fIdata_file\fR [ \fIdata_file ...\fR ]
 read the files and write them out; useful for converting from
 earlier polymake versions
 
 .SH OPTIONS
-.HP
-\fB\-A\fR application_name
-.IP
-start with this application, ignoring the $default_application and
-@start_applications settings
+.TP
+\fB\-A\fR \fIapplication_name\fR
+start with this application, ignoring the \fB$default_application\fR and
+\fB@start_applications\fR settings.
+.TP
+\fB\-a\fR \fIapplication_name\fR
+start with this application, ignoring the \fB$default_application\fR but
+in contrast to \fB-A\fR, load everything in \fB@start_applications\fR.
 .TP
 \fB\-d\fR
-produce some debug output; can be repeated to increase the debug level
+produce some debug output; can be repeated to increase the debug level.
 .TP
 \fB\-v\fR
 tell what's going on; can be repeated to increase the verbosity level.
-This is an obsolete option, please use custom variables $Verbose::*
+This is an obsolete option, please use custom variables \fB$Verbose::*\fR
 to gain more detailed control.
-.HP
+.TP
 \fB\-\-reconfigure\fR
-.IP
-rerun the autoconfiguration sections in all rule files
-.HP
-\fB\-\-reconfigure\-rules\fR RULENAME ...
-.IP
-rerun the autoconfiguration sections in the rule files matching RULENAME
-.TP
-\fB\-n\fR
-`dry run' mode: show the production rules that would be applied to the
-object, but don't run any; only applicable to the compatibility mode
-.HP
-\fB\-T\fR sec
-.IP
-set a time limit for the execution of production rules (currently broken)
+rerun the autoconfiguration sections in all rule files.
+.TP
+\fB\-\-config-path\fR \fIsettings_file\fR
+Import settings from a global configuration file.
+Several \fB--config-path\fR options are allowed, later instances have higher priority.
+.TP
+\fB\-\-config-path\fR \fBuser\fR[\fB=\fR\fIconfig_directory\fR]
+Specify the location of user's private settings, by default it's \fI~/.polymake\fR
+which may be overridden via \fBPOLYMAKE_USER_DIR\fR environment variable.
+All global \fB\-\-config\-path\fR imports must precede this option.
+.TP
+\fB\-\-no-config\fR
+Don't read any configuration files,
+don't try to configure rules automatically,
+don't load rule files requiring auto-configuration.
+Equivalent to \fB\-\-config\-path=none\fR.
+.TP
+\fB\-\-ignore-config\fR
+Don't read any configuration files,
+skip auto-configuration routines in the rule files.
+Equivalent to \fB\-\-config\-path=ignore\fR.
 .SH COPYRIGHT
-Copyright \(co 1997-2015
-Ewgenij Gawrilow, Michael Joswig (TU Berlin)
-http://www.polymake.org
+Copyright \(co 1997-2021
+Ewgenij Gawrilow, Michael Joswig, and the polymake team
+.br
+Technische Universität Berlin, Germany
+.br
+https://polymake.org
 .PP
 This is free software licensed under GPL; see the source for copying conditions.
 There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.