Update to spack v1: module file names too long for old Tcl/Tk systems

[climbfuji]

Description

For older versions of Tcl/Tk such as the one on Narwhal, there is apparently a 8192-character limit for environment variables. With the new, longer names of the modulefiles themselves in spack-stack v2 (mostly because of oneapi --> intel-oneapi-compilers), environment variables such as _LMFILES_ exceed this limit and as a result, commands such as module li segfault.

To Reproduce

See above.

Expected behavior

module li et al do not segfault. This can be achieved by shortening the module installation path, and/or by shortening the name of the compiler in the module hierarchy.

System, compiler, code, ...

Narwhal, Intel oneAPI

Additional context

n/a

[climbfuji]

Closed via #1813