Remove workspace Cargo.toml, add template

.github/workflows/rust.yml

@@ -81,10 +81,8 @@ jobs:
         with:
           path: target
           key: ${{ runner.os }}-${{ matrix.target }}
-      - uses: actions-rs/cargo@v1
-        with:
-          command: check
-          args: --package ${{ matrix.package }} --features=${{ matrix.features }} --target=${{ matrix.target }}
+      - name: Check
+        run: cd ${{ matrix.package }} &&  cargo check --features=${{ matrix.features }} --target=${{ matrix.target }}
 
   fmt:
     runs-on: ubuntu-latest

.gitignore

@@ -1,3 +1,4 @@
 target
 Cargo.lock
 third_party
+/Cargo.toml

Cargo.example.toml

@@ -0,0 +1,75 @@
+# This file is a template for a Cargo workspace for developer convenience.
+#
+# Since Cargo resolves all features for all crates in the workspace together, 
+# it is not possible to have a workspace with all the crates together, since they
+# enable incompatible features. For example, nrf crates enable embassy-macros/nrf
+# and stm32 crates enable embassy-macros/stm32. embassy-macros doesn't support having
+# both of these features on at the same time, because it makes no sense.
+#
+# Instead, we provide this template so you can enable only the crates you're going to
+# work on. This makes eg rust-analyzer check-on-save and autocomplete work, but only 
+# in these crates, without any feature conflict.
+#
+# Copy this file to `Cargo.toml` and uncomment one group of crates below.
+#
+# `/Cargo.toml` is already in .gitignore, so you don't commit it accidentally.
+
+[workspace]
+members = [
+    "embassy",
+    "embassy-traits",
+    "embassy-macros",
+    "embassy-extras",
+
+    # Uncomment ONLY ONE of the groups below.
+
+    # nRF
+    #"embassy-nrf",
+    #"embassy-nrf-examples",
+
+    # stm32
+    #"embassy-stm32",
+    #"embassy-stm32f4",
+    #"embassy-stm32l0",
+    #"embassy-stm32f4-examples",
+
+    # rp2040
+    #"embassy-rp",
+    #"embassy-rp-examples",
+
+    # std
+    #"embassy-std",
+    #"embassy-std-examples",
+]
+
+[profile.dev]
+codegen-units = 1
+debug = 2
+debug-assertions = true
+incremental = false
+opt-level = 3
+overflow-checks = true
+
+[profile.release]
+codegen-units = 1
+debug = 2
+debug-assertions = false
+incremental = false
+lto = "fat"
+opt-level = 's'
+overflow-checks = false
+
+# do not optimize proc-macro crates = faster builds from scratch
+[profile.dev.build-override]
+codegen-units = 8
+debug = false
+debug-assertions = false
+opt-level = 0
+overflow-checks = false
+
+[profile.release.build-override]
+codegen-units = 8
+debug = false
+debug-assertions = false
+opt-level = 0
+overflow-checks = false

Cargo.toml

@@ -1,58 +0,0 @@
-
-[workspace]
-members = [
-    "embassy",
-    "embassy-traits",
-    "embassy-nrf",
-    "embassy-stm32",
-    "embassy-stm32f4",
-    "embassy-stm32l0",
-    "embassy-nrf-examples",
-    "embassy-stm32f4-examples",
-    "embassy-macros",
-    "embassy-extras",
-]
-
-# embassy-std enables std-only features. Since Cargo resolves all features
-# for all crates in the workspace together, including it would result in
-# incompatible features enabled in embassy.
-exclude = [
-    "embassy-std",
-    "embassy-std-examples",
-    "embassy-rp",
-    "embassy-rp-examples",
-]
-
-[profile.dev]
-codegen-units = 1
-debug = 2
-debug-assertions = true
-incremental = false
-opt-level = 3
-overflow-checks = true
-
-[profile.release]
-codegen-units = 1
-debug = 2
-debug-assertions = false
-incremental = false
-lto = "fat"
-opt-level = 's'
-overflow-checks = false
-
-# do not optimize proc-macro crates = faster builds from scratch
-[profile.dev.build-override]
-codegen-units = 8
-debug = false
-debug-assertions = false
-opt-level = 0
-overflow-checks = false
-
-[profile.release.build-override]
-codegen-units = 8
-debug = false
-debug-assertions = false
-opt-level = 0
-overflow-checks = false
-
-[patch.crates-io]