feat!: rewrite Motoko recipe to delegate compilation to mops build

recipes/motoko/README.md

@@ -1,6 +1,6 @@
 # Motoko Recipe
 
-Compile Motoko source code using the moc compiler to create IC canisters.
+Compile Motoko source code using `mops build` to create IC canisters.
 
 ## Usage
 
@@ -12,26 +12,34 @@ canisters:
     recipe:
       type: "@dfinity/motoko@<version>"
       configuration:
-        main: src/main.mo
         shrink: true
 ```
 
-> Replace `<version>` with a release version (e.g. `v4.0.0`). See [available versions](https://github.com/dfinity/icp-cli-recipes/releases?q=motoko&expanded=true).
+> Replace `<version>` with a release version (e.g. `v5.0.0`). See [available versions](https://github.com/dfinity/icp-cli-recipes/releases?q=motoko&expanded=true).
+
+The canister must also be defined in `mops.toml`. The key in the `[canisters]` section must match the canister name in `icp.yaml`:
+
+```toml
+[toolchain]
+moc = "1.8.2"
+
+[canisters]
+backend = "src/main.mo"
+```
+
+Compiler flags, per-canister args, and the Candid file are all configured in `mops.toml`. See the [mops documentation](https://mops.one/docs) for the full `[canisters]` schema.
 
 ## Configuration Parameters
 
 | Parameter | Type    | Required | Description                                  | Default |
 |-----------|---------|----------|----------------------------------------------|---------|
-| main      | string  | Yes      | Path to the main Motoko source file          |         |
-| args      | string  | No       | Additional arguments to pass to moc compiler (e.g., `--incremental-gc`) |         |
-| candid    | string  | No       | Path to a custom Candid interface file. If not provided, the interface is auto-generated by the Motoko compiler | (auto-generated) |
 | metadata  | array   | No       | Array of key-value pairs for custom metadata | []      |
 | shrink    | boolean | No       | Remove unused functions and debug info to reduce file size | false   |
 | compress  | boolean | No       | Gzip compress the WASM file                  | false   |
 
 ## Prerequisites
 
-- `mops` (Motoko package manager) - this recipe uses `mops toolchain` to manage the Motoko compiler
+- `mops` (Motoko package manager) — manages the toolchain, dependencies, and canister build
 - `ic-wasm` (included with icp-cli installation)
 
 > **Note:** If you followed the [icp-cli installation guide](https://github.com/dfinity/icp-cli#installation), both `mops` and `ic-wasm` are already installed.
@@ -45,42 +53,64 @@ If mops is not installed, see: <https://mops.one/docs/install>
 ### Basic Example
 
 ```yaml
+# icp.yaml
 canisters:
   - name: hello-world
     recipe:
       type: "@dfinity/motoko@<version>"
-      configuration:
-        main: src/main.mo
+```
+
+```toml
+# mops.toml
+[toolchain]
+moc = "1.8.2"
+
+[canisters]
+hello-world = "src/main.mo"
 ```
 
 ### Advanced Example
 
 ```yaml
+# icp.yaml
 canisters:
-  - name: complex-backend
+  - name: backend
     recipe:
       type: "@dfinity/motoko@<version>"
       configuration:
-        main: src/backend.mo
-        args: --incremental-gc
         shrink: true
         compress: true
         metadata:
           - name: "canister:type"
             value: "backend"
-          - name: "language:version"
-            value: "0.10.0"
+```
+
+```toml
+# mops.toml
+[toolchain]
+moc = "1.8.2"
+
+[dependencies]
+core = "2.5.0"
+
+[moc]
+args = ["--default-persistent-actors"]
+
+[canisters.backend]
+main = "src/main.mo"
+candid = "backend.did"
+args = ["--incremental-gc"]
 ```
 
 ## Build Process
 
 When this recipe is executed:
 
-1. Checks if `mops` is installed (used for Motoko toolchain management)
-2. Compiles the specified Motoko entry file using `moc` via `mops toolchain`
-3. Handles Candid interface: auto-generates from Motoko source, or uses the provided `candid` file
-4. Injects compiler version metadata ("moc:version")
-5. Injects template type metadata ("template:type" = "motoko")
+1. Checks if `mops` and `ic-wasm` are installed
+2. Runs `mops build <name>` which compiles the canister using the toolchain, dependencies, and compiler flags defined in `mops.toml`
+3. Copies the built WASM to the icp-cli output path
+4. Injects compiler version metadata (`moc:version`)
+5. Injects template type metadata (`template:type` = `motoko`)
 6. Injects any custom metadata specified in the configuration
 7. Optionally removes unused functions if `shrink` is enabled
 8. Optionally gzip compresses the WASM file if `compress` is enabled
@@ -95,40 +125,42 @@ my-project/
 │   ├── main.mo          # Entry point
 │   ├── types.mo         # Type definitions
 │   └── utils.mo         # Utility functions
-├── .vessel/             # Package manager dependencies
-└── icp.yaml            # Build configuration
+├── mops.toml            # Toolchain, dependencies, canister config
+└── icp.yaml             # Build configuration
 ```
 
-## Common Issues
+## Migrating from v4
+
+The `main`, `candid`, and `args` recipe parameters have been removed. Move them to `mops.toml`:
 
-### Issue 1
+| Before (`icp.yaml`)         | After (`mops.toml`)                        |
+|-----------------------------|--------------------------------------------|
+| `main: src/main.mo`         | `[canisters.backend] main = "src/main.mo"` |
+| `candid: backend.did`       | `[canisters.backend] candid = "backend.did"` |
+| `args: --incremental-gc`    | `[canisters.backend] args = ["--incremental-gc"]` |
 
-**Problem**: `moc not found` error
-**Solution**: Install the Motoko compiler following the instructions at <https://internetcomputer.org/docs/building-apps/getting-started/install>
+The canister name in `icp.yaml` is used automatically — no additional recipe configuration is needed.
 
-### Issue 2
+## Common Issues
 
-**Problem**: Compilation errors in Motoko code
-**Solution**: Check your Motoko syntax and ensure all imports are correctly resolved
+### "No Motoko canisters found in mops.toml configuration"
 
-### Issue 3
+The `[canisters]` section is missing from `mops.toml`, or the canister name does not match the `name` parameter in `icp.yaml`. Ensure the key in `[canisters]` exactly matches the `name` value in the recipe configuration.
 
-**Problem**: Entry file not found
-**Solution**: Verify the entry path is correct relative to your project root and the file exists
+### "moc not found" error
 
-### Issue 4
+Install the Motoko compiler via mops: run `mops install` in your project directory. The toolchain version is set in `mops.toml` under `[toolchain]`.
 
-**Problem**: Missing dependencies
-**Solution**: Ensure all imported modules are available or install them using vessel package manager
+### Compilation errors
+
+Check your Motoko syntax and ensure all imports resolve. Run `mops check` for detailed diagnostics.
 
 ## Related Recipes
 
 - [Rust Recipe](../rust/README.md) - For building Rust canisters
 - [Pre-built Recipe](../prebuilt/README.md) - For using pre-compiled WASM files
 - [Asset Canister Recipe](../asset-canister/README.md) - For frontend assets canister
 
-Use this recipe when developing IC canisters in Motoko, the native language for the Internet Computer.
-
 ## Release History
 
 See the [release history](https://github.com/dfinity/icp-cli-recipes/releases?q=motoko&expanded=true) for changelogs, version updates, and breaking changes.

recipes/motoko/recipe.hbs

@@ -1,7 +1,4 @@
-{{! A recipe for building a Motoko canister }}
-{{! `main: string` Motoko file which contains the main actor }}
-{{! `args: string` Additional arguments to pass to the moc compiler }}
-{{! `candid: string` Optional, the path to the Candid interface file }}
+{{! A recipe for building a Motoko canister using `mops build` }}
 {{! `shrink: boolean` Optimizes the wasm with ic-wasm }}
 {{! `compress: boolean` determines whether the wasm should be gzipped }}
 {{! `metadata: [name: string, value: string]`: An array of name/value pairs that get injected into the wasm metadata section }}
@@ -19,7 +16,8 @@ build:
 
     - type: script
       commands:
-        - sh -c '$(mops toolchain bin moc) "{{ main }}" {{#if args}}{{ args }} {{/if}}{{#if candid}}--omit-metadata{{else}}--public-metadata{{/if}} candid:service $(mops sources) -o "$ICP_WASM_OUTPUT_PATH"'
+        - mops build "{{ _.canister.name }}" --output .mops/.build
+        - cp ".mops/.build/{{ _.canister.name }}.wasm" "$ICP_WASM_OUTPUT_PATH"
 
     - type: script
       commands:
@@ -28,9 +26,6 @@ build:
     - type: script
       commands:
         - ic-wasm "$ICP_WASM_OUTPUT_PATH" -o "${ICP_WASM_OUTPUT_PATH}" metadata "template:type" -d "motoko" --keep-name-section
-        {{#if candid}}
-        - ic-wasm "$ICP_WASM_OUTPUT_PATH" -o "${ICP_WASM_OUTPUT_PATH}" metadata "candid:service" -f '{{ candid }}' -v public --keep-name-section
-        {{/if}}
         {{#if metadata}}
         {{#each metadata}}
         - ic-wasm "$ICP_WASM_OUTPUT_PATH" -o "${ICP_WASM_OUTPUT_PATH}" metadata "{{ name }}" -d "{{ value }}" --keep-name-section