simplify example

Author: pnmadelaine

sample_projects/cross_compile_build_dependencies/Cargo.lock

@@ -1,15 +1,7 @@
-[workspace]
-members = [
-  "./alice",
-  "./bob",
-  "./charlie",
-]
-resolver = "2"
-
-[workspace.package]
+[package]
+name = "cross_compile_build_dependencies"
 version = "1.0.0"
 edition = "2021"
 
-[workspace.dependencies]
-bob.path = "./bob"
-charlie.path = "./charlie"
+[build-dependencies]
+alice.path = "./alice"

sample_projects/cross_compile_build_dependencies/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "alice"
-version.workspace = true
-edition.workspace = true
+version = "1.0.0"
+edition = "2021"
 
-[build-dependencies]
-bob.workspace = true
+[target.'cfg(unix)'.dependencies]
+bob.path = "./bob"

sample_projects/cross_compile_build_dependencies/alice/Cargo.toml

@@ -0,0 +1,4 @@
+[package]
+name = "bob"
+version = "1.0.0"
+edition = "2021"

sample_projects/cross_compile_build_dependencies/alice/bob/Cargo.toml

@@ -0,0 +1,2 @@
+#[cfg(unix)]
+pub use bob;

sample_projects/cross_compile_build_dependencies/charlie/src/lib.rs renamed to sample_projects/cross_compile_build_dependencies/alice/bob/src/lib.rs

@@ -1,6 +1,4 @@
-{ nixpkgs ? import ../../nix/nixpkgs.nix
-, lib ? import "${nixpkgs}/lib"
-, pkgs ? import nixpkgs { crossSystem = lib.systems.examples.wasm32-unknown-none; }
-, generatedCargoNix
+{ generatedCargoNix
+, pkgs ? import ../../nix/nixpkgs.nix { crossSystem.config = "wasm32-unknown-none"; }
 }:
-(pkgs.callPackage generatedCargoNix { }).workspaceMembers.alice.build
+(pkgs.callPackage generatedCargoNix { }).rootCrate.build