Nickel wkg merge

global.toml

# ~/.config/wasm-pkg/config.toml
default_registry = "foo.ghcr.io"

[namespace_registries.my-namespace]
registry = "foo.ghcr.io"

[namespace_registries.my-namespace.metadata.oci]
registry = "foo.ghcr.io"
namespacePrefix = "foo-oci-local/"

[package_registry_overrides]

[registry."foo.ghcr.io".oci]
auth = { username = "", password = "" }

[registry.local-dev.local]
root = "~/work/foo_project"

Project level config.toml:

# ./.wasm-pkg/config.toml
default_registry = "foo.ghcr.io"

[namespace_registries.my-namespace]
registry = "foo.ghcr.io"

[namespace_registries.my-namespace.metadata.oci]
registry = "foo.ghcr.io"
namespacePrefix = "foo-oci-local/"

[registry."foodev.ghcr.io".oci.auth]
username = ""
password = ""

[registry.local-dev.local]
root = "/tmp/wkg-store"

From ~/work/foo_project/

$ nickel export .wasm-pkg/config.toml ~/.config/wasm-pkg/config.toml --format toml
error: non mergeable terms
   ┌─ ~/work/foo_project/.wasm-pkg/config.toml:15:8
   │
15 │ root = "/tmp/wkg-store"
   │        ^^^^^^^^^^^^^^^^ cannot merge this expression
   │
   ┌─ ~/.config/wasm-pkg/config.toml:16:8
   │
16 │ root = "~/work/foo_project"
   │        ^^^^^^^^^^^^^^^^^^^^ with this expression
   │
   ┌─ <generated main>:1:1
   │
 1 │ ╭ (import ".wasm-pkg/config.toml")
 2 │ │ & (import "~/.config/wasm-pkg/config.toml")
   │ ╰──────────────────────────────────────────────────────────' originally merged here
   │
   = Merge operands have the same merge priority but they can't be combined.
   = Both values are of type String but they aren't equal.
   = String values can only be merged if they are equal