Dogfood dict unpack syntax in Cargo.rcl files

This does look more pleasant, yay! I do notice that I find '...' tedious
to write though, and maybe a bit too verbose. Maybe I want to change
that to '..' after all, even for dicts. But we can do that later, let's
see how this goes.

fuzz/Cargo.rcl

@@ -1,14 +1,13 @@
 let root = import "//Cargo.rcl";
 
 {
-  package =
-    root.package
-    | {
-      name = "rcl-fuzz",
-      description = "Fuzz targets and helpers for testing RCL.",
-      publish = false,
-      metadata = { cargo-fuzz = true },
-    },
+  package = {
+    ...root.package,
+    name = "rcl-fuzz",
+    description = "Fuzz targets and helpers for testing RCL.",
+    publish = false,
+    metadata = { cargo-fuzz = true },
+  },
 
   dependencies = {
     arbitrary = { version = "1.3.0", features = ["derive"] },

grammar/tree-sitter-rcl/Cargo.rcl

@@ -1,27 +1,29 @@
 let root = import "//Cargo.rcl";
 
 {
-  package =
-    root.package
-    | {
-      name = "tree-sitter-rcl",
-      description = "RCL grammar for the tree-sitter parsing library.",
-      keywords = ["incremental", "parsing", "rcl"],
-      categories = ["parsing", "text-editors"],
-      build = "bindings/rust/build.rs",
-      include = [
-        "bindings/rust/*",
-        "grammar.js",
-        "queries/*",
-        "src/*",
-      ],
-    },
+  package = {
+    ...root.package,
+    name = "tree-sitter-rcl",
+    description = "RCL grammar for the tree-sitter parsing library.",
+    keywords = ["incremental", "parsing", "rcl"],
+    categories = ["parsing", "text-editors"],
+    build = "bindings/rust/build.rs",
+    include = [
+      "bindings/rust/*",
+      "grammar.js",
+      "queries/*",
+      "src/*",
+    ],
+  },
+
   lib = {
     path = "bindings/rust/lib.rs",
   },
+
   dependencies = {
     tree-sitter = "0.20.10",
   },
+
   build-dependencies = {
     cc = "1.0",
   },

pyrcl/Cargo.rcl

@@ -1,12 +1,11 @@
 let root = import "//Cargo.rcl";
 
 {
-  package =
-    root.package
-    | {
-      name = "pyrcl",
-      description = "Python bindings to the RCL configuration language.",
-    },
+  package = {
+    ...root.package,
+    name = "pyrcl",
+    description = "Python bindings to the RCL configuration language.",
+  },
 
   lib = {
     crate-type = ["cdylib"],

wasm/Cargo.rcl

@@ -1,12 +1,11 @@
 let root = import "//Cargo.rcl";
 
 {
-  package =
-    root.package
-    | {
-      name = "rcl-wasm",
-      description = "WASM entry points for RCL functionality.",
-    },
+  package = {
+    ...root.package,
+    name = "rcl-wasm",
+    description = "WASM entry points for RCL functionality.",
+  },
 
   lib = { crate-type = ["cdylib"] },