compatibility is now more restrictive than before

Author: schlichtanders

.github/workflows/ci.yml

@@ -9,7 +9,6 @@ jobs:
     strategy:
       matrix:
         version:
-          - '1.5'
           - '1.6'
           - 'nightly'
         os:

Project.toml

@@ -8,17 +8,35 @@ Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 
 [compat]
 Compat = "2.1, 3"
-julia = "1.3"
-# This package is not compatible with julia 1.0
-# Either: Error During Test at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/test/Either.jl:6
-#   Test threw exception
-#   Expression: getrightOption(Either{String}(3)) == Option(3)
-#   MethodError: Union{Nothing, Identity{T}} where T(::Int64) is ambiguous. Candidates:
-#     (::Type{Union{Nothing, Identity{T}}})(a::T) where T in DataTypesBasic at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/Option.jl:6
-#     (::Type{Union{Nothing, Identity{T}} where T})(a::T) where T in DataTypesBasic at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/Option.jl:8
-#   Possible fix, define
-#     Nothing(::T)
-# TODO check whether this might be added to 1.0.X somewhen
+julia = "1.6"
+# for all Julia versions below 1.6 we now get an error... 
+# really surprising, but we go for 1.6 then, as a new LTS version will come soon.
+
+# ERROR: LoadError: LoadError: StackOverflowError:
+# Stacktrace:
+#  [1] top-level scope at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/promote_type.jl:105
+#  [2] include(::Function, ::Module, ::String) at ./Base.jl:380
+#  [3] include at ./Base.jl:368 [inlined]
+#  [4] include(::String) at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/DataTypesBasic.jl:34
+#  [5] top-level scope at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/DataTypesBasic.jl:53
+#  [6] include(::Function, ::Module, ::String) at ./Base.jl:380
+#  [7] include(::Module, ::String) at ./Base.jl:368
+#  [8] top-level scope at none:2
+#  [9] eval at ./boot.jl:347 [inlined]
+#  [10] eval(::Expr) at ./client.jl:467
+#  [11] top-level scope at ./none:3
+# in expression starting at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/promote_type.jl:105
+# in expression starting at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/src/DataTypesBasic.jl:53
+# ERROR: LoadError: Failed to precompile DataTypesBasic [83eed652-29e8-11e9-12da-a7c29d64ffc9] to /home/runner/.julia/compiled/v1.5/DataTypesBasic/qwg4x_PPMzj.ji.
+# Stacktrace:
+#  [1] error(::String) at ./error.jl:33
+#  [2] compilecache(::Base.PkgId, ::String) at ./loading.jl:1305
+#  [3] _require(::Base.PkgId) at ./loading.jl:1030
+#  [4] require(::Base.PkgId) at ./loading.jl:928
+#  [5] require(::Module, ::Symbol) at ./loading.jl:923
+#  [6] include(::String) at ./client.jl:457
+#  [7] top-level scope at none:6
+# in expression starting at /home/runner/work/DataTypesBasic.jl/DataTypesBasic.jl/test/runtests.jl:2
 
 [extras]
 Suppressor = "fd094767-a336-5f1f-9728-57cf17d0bbfb"