Install a global tool in a custom location fails to run

[flaxed]

I have created a net 5 CLI program as a tools package and was testing a local tool install before migrating to executing the tool in step of a CI build.

Installation works fine with:

dotnet tool install --add-source '..\packages\' --version 1.0.8-beta --tool-path ./tools Foo.Bar

and installs fine with:

warning NU1603: restore depends on Foo.Bar (>= 1.0.8-beta) but Foo.Bar 1.0.8-beta was not found. An approximate best match of Foo.Bar 1.0.8-beta-g00e633e505 was resolved.
You can invoke the tool using the following command: cr-confgen
Tool 'foo.bar' (version '1.0.8-beta-g00e633e505') was successfully installed.

but when I try to execute the tool with

.\tools\cr-confgen.exe

I'm getting this error:

Cannot use file stream for [X:\tools\Foo.Bar.runtimeconfig.json]: No such file or directory
Invalid runtimeconfig.json [X:\tools\.store\Foo.Bar\1.0.8-beta-g00e633e505\Foo.Bar\1.0.8-beta-g00e633e505\tools\net5.0\any\Foo.Bar.runtimeconfig.json] [X:\tools\.store\Foo.Bar\1.0.8-beta-g00e633e505\Foo.Bar\1.0.8-beta-g00e633e505\tools\net5.0\any\Foo.Bar.runtimeconfig.dev.json]

Installation and execution both works fine with Install a global tool and the Install a local tool methods described in the documentation at How to manage .NET tools