Remove banner code and instead use should_show_banner (#1027)

Project.toml

@@ -4,6 +4,7 @@ authors = ["Thomas Breuer <sam@math.rwth-aachen.de>", "Sebastian Gutsche <gutsch
 version = "0.11.2"
 
 [deps]
+AbstractAlgebra = "c3fe647b-3220-5bb0-a1ea-a7954cac585d"
 Artifacts = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
 Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 Downloads = "f43a241f-c20a-4ad4-852c-f6b1247861c6"
@@ -22,6 +23,7 @@ Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Scratch = "6c6a2e73-6563-6170-7368-637461726353"
 
 [compat]
+AbstractAlgebra = "0.41.11, 0.42.1"
 Artifacts = "1.6"
 Compat = "4.4.0"
 Downloads = "1.4.3"

src/GAP.jl

@@ -20,6 +20,8 @@ if Sys.iswindows()
   windows_error()
 end
 
+import AbstractAlgebra # for should_show_banner()
+
 import GAP_jll: GAP_jll, libgap
 
 GAP_jll.is_available() ||
@@ -260,26 +262,7 @@ function __init__()
         end
     end
 
-    # Check if were loaded from another package
-    # if VERSION < 1.7.*, only the "other" package will have the
-    # _tryrequire_from_serialized in the backtrace.
-    # if VERSION >= 1.8, also doing 'using Package' will have
-    # _tryrequire_from_serialized the backtrace.
-    #
-    # To still distinguish both scenarios, notice that
-    # 'using OtherPackage' will either have _tryrequire_from_serialized at least twice,
-    # or one with four arguments (hence five as the function name is the first argument)
-    # 'using Package' serialized will have a version with less arguments
-    bt = Base.process_backtrace(Base.backtrace())
-    filter!(sf -> sf[1].func === :_tryrequire_from_serialized, bt)
-    isinteractive_manual =
-      length(bt) == 0 || (length(bt) == 1 && length(only(bt)[1].linfo.specTypes.parameters) < 4)
-
-    # Respect the -q flag
-    isquiet = Bool(Base.JLOptions().quiet)
-
-    show_banner = !isquiet && isinteractive_manual && isinteractive() &&
-                 !any(x->x.name in ["Oscar"], keys(Base.package_locks)) &&
+    show_banner = AbstractAlgebra.should_show_banner() &&
                  get(ENV, "GAP_PRINT_BANNER", "true") != "false"
 
     if !show_banner

test/Aqua.jl

@@ -3,6 +3,7 @@ using Aqua
 @testset "Aqua.jl" begin
     Aqua.test_all(
         GAP;
+        ambiguities=false, # some from AbstractAlgebra.jl show up here
         piracies=(GAP.use_jl_reinit_foreign_type() ? true : (treat_as_own=[GapObj],))
     )
 end