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##############################################################################
##
#W  start.gd                    GAP4 package `Utils'             Chris Wensley
##
#Y  Copyright (C) 2015-2022, The GAP Group

DeclareInfoClass( "InfoUtils" );

##  these version numbers refer to the latest package releases
##  containing the code which is to be transferred

UtilsPackageVersions :=
  [ "autodoc",     "2016.01.31",    ## latest is 2017.09.08
    "resclasses",  "4.2.5",         ## latest is 4.7.1, 18/12/17
    "rcwa",        "4.1.5"          ## latest is 4.6.2, 26/06/18
  ];
##  (04/09/18) removed QPA from this list - no functions transferred
##  (02/06/18) removed xmod from this list
##  functions being transferred cannot be used until the Home packages have
##  been loaded: when this has been done the following variable is set true

UtilsLoadingComplete := false;

#############################################################################
##
#F  OKtoReadFromUtils( <name> ) . . . tests whether name still contains the
##                                    code to be transferred to Utils
#F  OKtoReadFromUtilsSpec( <name>, <oldver> ) . . . special case of above
##
BindGlobal( "OKtoReadFromUtils", function( Name )
    local  name, ver, ver0, pos, ok;

    name := LowercaseString( Name );
    pos := Position( UtilsPackageVersions, name );
    if ( pos = fail ) then
        Error( "package 'name' not in the list UtilsPackageVersions" );
    fi;
    ver0 := UtilsPackageVersions[ pos+1 ];
    ver := InstalledPackageVersion( name );
    ok := ( ( ver = fail )         ## name is not installed on the system
            or ( ver > ver0 ) );   ## name still contains the code
    return ok;
end );

BindGlobal( "OKtoReadFromUtilsSpec", function( Name, oldver )
    local  name, ver, pos, ok;

    name := LowercaseString( Name );
    pos := Position( UtilsPackageVersions, name );
    if ( pos = fail ) then
        Error( "package 'name' not in the list UtilsPackageVersions" );
    fi;
    ver := InstalledPackageVersion( name );
    ok := ( ( ver = fail )           ## name is not installed on the system
            or ( ver > oldver ) );   ## name still contains the code
    return ok;
end );

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#E  start.gd  . . . . . . . . . . . . . . . . . . . . . . . . . . . ends here

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