Bug: When the value of the environment variable HOME is set to empty, a panic error will occur

[zong-zhe]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Prepare a kcl file main.k

a = 1

Set the environment variable HOME to empty.

export HOME=""

Compile the kcl file:

kcl run main.k

2. What did you expect to see? (Required)

Compile successfully

a: 1

3. What did you see instead (Required)

An panic error:

 kcl run main.k
panic: failed to load config file '' for kpm.
        internal bugs, failed to load working directory
        could not access $KCL_PKG_PATH.
        internal bugs, failed to load user home directory
        $HOME is not defined

goroutine 1 [running]:
kcl-lang.io/cli/cmd/kcl/commands.NewModCmd()
        /Workspace/kcl/cli/cmd/kcl/commands/mod.go:50 +0x27c
kcl-lang.io/cli/cmd/kcl/commands.NewWithName({0x103bea758, 0x3})
        /Workspace/kcl/cli/cmd/kcl/commands/root.go:123 +0x214
kcl-lang.io/cli/cmd/kcl/commands.New(...)
        /Workspace/kcl/cli/cmd/kcl/commands/root.go:99
main.main()
        /Workspace/kcl/cli/cmd/kcl/main.go:14 +0x28

4. What is your KCL components version? (Required)

The main branch

[Rohanraj123]

I am working on this issue!