Fix "can't find crate for std" for stm32-metapac-gen deps.

.github/workflows/rust.yml

@@ -142,4 +142,4 @@ jobs:
         with:
           toolchain: stable
       - name: Generate pregenerated metapac
-        run: cd stm32-metapac/gen; cargo run --release
+        run: cd stm32-metapac-gen; cargo run --release

Cargo.example.toml

@@ -47,6 +47,12 @@ members = [
     #"examples/std",
 ]
 
+exclude = [
+    # This is only built as a build-dependency, for the host. It shouldn't
+    # get built for the target.
+    "stm32-metapac-gen"
+]
+
 [profile.dev]
 codegen-units = 1
 debug = 2

stm32-metapac-gen/src/lib.rs

@@ -128,18 +128,17 @@ fn find_reg_for_field<'c>(
 }
 
 fn make_peripheral_counts(out: &mut String, data: &HashMap<String, u8>) {
-    write!(out,
+    write!(
+        out,
         "#[macro_export]
 macro_rules! peripheral_count {{
-    ").unwrap();
+    "
+    )
+    .unwrap();
     for (name, count) in data {
-        write!(out,
-            "({}) => ({});\n",
-            name, count,
-        ).unwrap();
+        write!(out, "({}) => ({});\n", name, count,).unwrap();
     }
-    write!(out,
-           " }}\n").unwrap();
+    write!(out, " }}\n").unwrap();
 }
 
 fn make_table(out: &mut String, name: &str, data: &Vec<Vec<String>>) {
@@ -487,7 +486,11 @@ pub fn gen(options: Options) {
         make_table(&mut extra, "peripherals", &peripherals_table);
         make_table(&mut extra, "peripheral_versions", &peripheral_version_table);
         make_table(&mut extra, "peripheral_pins", &peripheral_pins_table);
-        make_table(&mut extra, "peripheral_dma_channels", &peripheral_dma_channels_table);
+        make_table(
+            &mut extra,
+            "peripheral_dma_channels",
+            &peripheral_dma_channels_table,
+        );
         make_table(&mut extra, "peripheral_rcc", &peripheral_rcc_table);
         make_table(&mut extra, "dma_channels", &dma_channels_table);
         make_table(&mut extra, "dma_requests", &dma_requests_table);
@@ -618,7 +621,7 @@ pub fn gen(options: Options) {
 
     // Generate src/lib.rs
     const CUT_MARKER: &[u8] = b"// GEN CUT HERE";
-    let librs = include_bytes!("../../src/lib.rs");
+    let librs = include_bytes!("../../stm32-metapac/src/lib.rs");
     let i = bytes_find(librs, CUT_MARKER).unwrap();
     let mut contents: Vec<u8> = Vec::new();
     contents.extend(&librs[..i]);
@@ -636,7 +639,7 @@ pub fn gen(options: Options) {
     const BUILDDEP_BEGIN: &[u8] = b"# BEGIN BUILD DEPENDENCIES";
     const BUILDDEP_END: &[u8] = b"# END BUILD DEPENDENCIES";
 
-    let mut contents = include_bytes!("../../Cargo.toml").to_vec();
+    let mut contents = include_bytes!("../../stm32-metapac/Cargo.toml").to_vec();
     let begin = bytes_find(&contents, BUILDDEP_BEGIN).unwrap();
     let end = bytes_find(&contents, BUILDDEP_END).unwrap() + BUILDDEP_END.len();
     contents.drain(begin..end);

stm32-metapac-gen/src/main.rs

@@ -3,7 +3,7 @@ use stm32_metapac_gen::*;
 
 fn main() {
     let out_dir = PathBuf::from("out");
-    let data_dir = PathBuf::from("../../stm32-data/data");
+    let data_dir = PathBuf::from("../stm32-data/data");
 
     let chips = std::fs::read_dir(data_dir.join("chips"))
         .unwrap()

stm32-metapac/Cargo.toml

@@ -11,7 +11,7 @@ cortex-m-rt = { version = "0.6.8", optional = true }
 # BEGIN BUILD DEPENDENCIES
 # These are removed when generating the pre-generated crate using the tool at gen/.
 [build-dependencies]
-stm32-metapac-gen = { path = "./gen" }
+stm32-metapac-gen = { path = "../stm32-metapac-gen" }
 regex = "1.5.4"
 # END BUILD DEPENDENCIES
 

stm32-metapac/gen/.vscode/settings.json

@@ -1,3 +0,0 @@
-{
-    "editor.formatOnSave": true
-}