feat: Rework the configuration system

This refactors most parts of the configuration system. Splitting it
up into a command line argument model, a persistent config file model,
and the runtime model.

The command line arguments (including env-vars) will override the
persisted (or default) config model.

It also adds the ability to parse YAML, JSON, and cargo metadata
in addition to the TOML variant.

This prepares the configuration for future enhancements, like build
profiles, ...

Author: ctron

.github/workflows/ci.yaml

@@ -138,10 +138,6 @@ jobs:
 
   test-examples:
     needs: test # Ensure test is run first.
-    env:
-      # for the CI we need to disable those checks, as we may run with a pre-release version, which would force us to
-      # replace all version requirements with pre-release requirements for this version.
-      TRUNK_REQUIRED_VERSION: '*'
     strategy:
       fail-fast: false
       max-parallel: 32
@@ -200,7 +196,12 @@ jobs:
 
       - name: Build | Examples | ${{ matrix.example }} on ${{ matrix.os }}
         shell: bash
-        run: $GITHUB_WORKSPACE/trunk --config=examples/${{ matrix.example }}/Trunk.toml build
+        env:
+          # for the CI we need to disable those checks, as we may run with a pre-release version, which would force us to
+          # replace all version requirements with pre-release requirements for this version.
+          TRUNK_REQUIRED_VERSION: '*'
+        run: |
+          $GITHUB_WORKSPACE/trunk --config=examples/${{ matrix.example }} build
 
   examples:
     runs-on: ubuntu-22.04
@@ -214,3 +215,31 @@ jobs:
       - name: Failure
         if: ${{ contains(needs.*.result, 'failure') }}
         run: exit 1
+
+  uncommitted:
+    runs-on: ubuntu-22.04
+    needs:
+      - test
+    steps:
+      - name: Setup | Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup | Download CLI
+        uses: actions/download-artifact@v4
+        with:
+          name: test-cli-ubuntu-latest
+
+      - name: Setup | Make executable
+        run: chmod a+x $GITHUB_WORKSPACE/trunk
+
+      - name: Generate | Config Schema
+        run: |
+          $GITHUB_WORKSPACE/trunk config generate-schema schemas/config.json
+
+      - name: Diff | Config Schema
+        run: |
+          git diff --quiet schemas/config.json
+          if [ $? -gt 0 ]; then
+              echo "::error::Uncommitted changes for schemas/config.json (run `cargo run -- config generate-schema schemas/config.json` after making changes to the configuration model)"
+              exit 1
+          fi

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "trunk"
-version = "0.20.0"
+version = "0.21.0-alpha.1"
 edition = "2021"
 description = "Build, bundle & ship your Rust WASM application to the web."
 license = "MIT/Apache-2.0"
@@ -54,10 +54,12 @@ parking_lot = "0.12"
 remove_dir_all = "0.8"
 reqwest = { version = "0.12", default-features = false, features = ["stream", "trust-dns"] }
 sha2 = "0.10"
+schemars = { version = "0.8", features = ["derive"] }
 seahash = { version = "4", features = ["use_std"] }
 semver = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
+serde_yaml = "=0.9.33" # serde-yaml is deprecated, but "just works", let's see who becomes the next serde_yaml
 strum = { version = "0.26", features = ["derive"] }
 tar = "0.4"
 time = { version = "0.3", features = ["serde-well-known"] }

Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "cargo-manifest-example"
+version = "0.1.0"
+authors = ["Jens Reimann <ctron@dentrassi.de>"]
+edition = "2021"
+
+[dependencies]
+console_error_panic_hook = "0.1"
+wasm-bindgen = "0.2"
+web-sys = { version = "0.3", features = [
+    "console",
+    "Document",
+    "HtmlElement",
+    "Node",
+    "Text",
+    "Window",
+] }
+
+[package.metadata.trunk.build]
+target = "index.html"
+dist = "dist"
+
+[package.metadata.trunk.serve]
+port = 9090

examples/cargo-manifest/Cargo.lock

@@ -0,0 +1,8 @@
+Trunk | cargo-manifest
+=========================
+An example application demonstrating building a vanilla Rust (no frameworks) WASM web application having the
+configuration in the `Cargo.toml` file instead.
+
+Once you've installed Trunk, simply execute `trunk serve --open` from this example's directory, and you should see the
+web application rendered in your browser.
+