A while back, I encountered the following error whilst developing a little F# app on .NET Core / macOS:
System.MissingMethodException: Method not found: 'System.Tuple`2<Microsoft.FSharp.Core.FSharpFunc`2<System.__Canon,Microsoft.FSharp.Core.FSharpOption`1<!!1>>,Microsoft.FSharp.Core.FSharpFunc`2<!!1,Microsoft.FSharp.Core.FSharpFunc`2<System.__Canon,System.__Canon>>> Prism.ofEpimorphism(Microsoft.FSharp.Core.FSharpFunc`2<System.__Canon,Microsoft.FSharp.Core.FSharpOption`1<!!1>>, Microsoft.FSharp.Core.FSharpFunc`2<!!1,System.__Canon>)'.
at Chiron.Mapping.Json.writeWith[a](FSharpFunc`2 toJson, String key, a value)
at Social.Suave.ToJson@158-6.Invoke(Unit unitVar) in /Users/jontaylor/HomeProjects/fsharp/tmp/FsTweet/src/FsTweet.Web/Social.fs:line 158
at Chiron.Builder.Delay@193.Invoke(Json json)
at Social.Suave.onFindFolloweesSuccess(FSharpList`1 users) in /Users/jontaylor/HomeProjects/fsharp/tmp/FsTweet/src/FsTweet.Web/Social.fs:line 207
at Chessie.ErrorHandling.AsyncExtensions.Async.map@241.Invoke(a x)
at Microsoft.FSharp.Control.AsyncBuilderImpl.args@506-1.Invoke(a a)
I wanted to examine the versions of all the DLLs in order to troubleshoot the problem. However, I could not find an easy way to do this. I eventually fixed the problem (briefly described here).
As a result of this experience, I decided to write a .NET Core Global Tool to make it easy to display the version information of .NET Core assemblies.
dotnet tool install --global dotnet-versioninfo
$ versioninfo -h
Display version information of .NET Core assemblies.
Usage: versioninfo [arguments] [options]
Arguments:
Pattern Glob pattern [default: **/*.dll]
Options:
-r|--relative Show relative paths in the results
-j|--json Format the results as JSON
-v|--version Display the version of this tool and then exit
-?|-h|--help Show help information
$ versioninfo
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/obj/Debug/netcoreapp2.1/tests.dll
FileVersionInfo.FileVersion: 1.0.0.0
FileVersionInfo.ProductVersion: 1.0.0
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/xunit.runner.reporters.netcoreapp10.dll
FileVersionInfo.FileVersion: 2.3.1.3858
FileVersionInfo.ProductVersion: 2.3.1
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/xunit.runner.visualstudio.dotnetcore.testadapter.dll
FileVersionInfo.FileVersion: 2.3.1.3858
FileVersionInfo.ProductVersion: 2.3.1
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/xunit.runner.utility.netcoreapp10.dll
FileVersionInfo.FileVersion: 2.3.1.3858
FileVersionInfo.ProductVersion: 2.3.1
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/tests.dll
FileVersionInfo.FileVersion: 1.0.0.0
FileVersionInfo.ProductVersion: 1.0.0
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/obj/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/publish/McMaster.Extensions.CommandLineUtils.dll
FileVersionInfo.FileVersion: 2.2.3.272
FileVersionInfo.ProductVersion: 2.2.3-rtm.272
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/publish/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/publish/Glob.dll
FileVersionInfo.FileVersion: 2.0.13.0
FileVersionInfo.ProductVersion: 2.0.13
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/publish/Newtonsoft.Json.dll
FileVersionInfo.FileVersion: 9.0.1.19813
FileVersionInfo.ProductVersion: 9.0.1
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/publish/System.IO.Abstractions.dll
FileVersionInfo.FileVersion: 2.1.0.209
FileVersionInfo.ProductVersion: 2.1.0.209
$ versioninfo **/netcore**/*version*.dll
/Users/jontaylor/HomeProjects/dotnet-versioninfo/tests/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/obj/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
/Users/jontaylor/HomeProjects/dotnet-versioninfo/src/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
$ versioninfo **/netcore**/*version*.dll -r
tests/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
src/obj/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
src/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll
FileVersionInfo.FileVersion: 0.0.12.0
FileVersionInfo.ProductVersion: 0.0.12
$ versioninfo **/netcore**/*version*.dll -r -j
[
{
"FileName": "tests/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll",
"FileVersion": "0.0.12.0",
"ProductVersion": "0.0.12"
},
{
"FileName": "src/obj/Debug/netcoreapp2.1/dotnet-versioninfo.dll",
"FileVersion": "0.0.12.0",
"ProductVersion": "0.0.12"
},
{
"FileName": "src/bin/Debug/netcoreapp2.1/dotnet-versioninfo.dll",
"FileVersion": "0.0.12.0",
"ProductVersion": "0.0.12"
}
]
- .NET Core 2.1 Global Tools
- Getting started with creating a .NET Core global tool package
- A list of tools to extend the .NET Core command line (dotnet)
- Creating a .NET Core global CLI tool for squashing images with the TinyPNG API
- Version vs VersionSuffix vs PackageVersion: What do they all mean?
- CommandLineUtils