generate third-party license notices in the release build

Author: phisch

.github/workflows/release.yml

@@ -42,12 +42,17 @@ jobs:
       - name: Build release binaries
         run: cargo build --release --locked
 
+      - name: Generate third-party licenses
+        run: |
+          cargo install cargo-about --locked --features cli
+          cargo about generate about.hbs > THIRD-PARTY-LICENSES.html
+
       - name: Package
         id: package
         run: |
           name="psst-${GITHUB_REF_NAME}-x86_64-linux"
           mkdir "$name"
-          cp target/release/psst-pinentry target/release/psst-keyring-prompter target/release/psst-polkit-agent README.md LICENSE LICENSE-GPL-3.0 "$name"/
+          cp target/release/psst-pinentry target/release/psst-keyring-prompter target/release/psst-polkit-agent README.md LICENSE LICENSE-GPL-3.0 THIRD-PARTY-LICENSES.html "$name"/
           strip "$name"/psst-pinentry "$name"/psst-keyring-prompter "$name"/psst-polkit-agent
           tar -czf "$name.tar.gz" "$name"
           sha256sum "$name.tar.gz" > "$name.tar.gz.sha256"

.gitignore

@@ -1 +1,3 @@
 /target
+
+/THIRD-PARTY-LICENSES.html

about.hbs

@@ -0,0 +1,70 @@
+<html>
+
+<head>
+    <style>
+        @media (prefers-color-scheme: dark) {
+            body {
+                background: #333;
+                color: white;
+            }
+            a {
+                color: skyblue;
+            }
+        }
+        .container {
+            font-family: sans-serif;
+            max-width: 800px;
+            margin: 0 auto;
+        }
+        .intro {
+            text-align: center;
+        }
+        .licenses-list {
+            list-style-type: none;
+            margin: 0;
+            padding: 0;
+        }
+        .license-used-by {
+            margin-top: -10px;
+        }
+        .license-text {
+            max-height: 200px;
+            overflow-y: scroll;
+            white-space: pre-wrap;
+        }
+    </style>
+</head>
+
+<body>
+    <main class="container">
+        <div class="intro">
+            <h1>Third Party Licenses</h1>
+            <p>This page lists the licenses of the projects used in cargo-about.</p>
+        </div>
+    
+        <h2>Overview of licenses:</h2>
+        <ul class="licenses-overview">
+            {{#each overview}}
+            <li><a href="#{{id}}">{{name}}</a> ({{count}})</li>
+            {{/each}}
+        </ul>
+
+        <h2>All license text:</h2>
+        <ul class="licenses-list">
+            {{#each licenses}}
+            <li class="license">
+                <h3 id="{{id}}">{{name}}</h3>
+                <h4>Used by:</h4>
+                <ul class="license-used-by">
+                    {{#each used_by}}
+                    <li><a href="{{#if crate.repository}} {{crate.repository}} {{else}} https://crates.io/crates/{{crate.name}} {{/if}}">{{crate.name}} {{crate.version}}</a></li>
+                    {{/each}}
+                </ul>
+                <pre class="license-text">{{text}}</pre>
+            </li>
+            {{/each}}
+        </ul>
+    </main>
+</body>
+
+</html>

about.toml

@@ -0,0 +1,24 @@
+targets = ["x86_64-unknown-linux-gnu"]
+
+accepted = [
+    "MIT",
+    "MIT-0",
+    "Apache-2.0",
+    "Apache-2.0 WITH LLVM-exception",
+    "BSD-2-Clause",
+    "BSD-3-Clause",
+    "0BSD",
+    "ISC",
+    "Zlib",
+    "Unicode-3.0",
+    "Unicode-DFS-2016",
+    "MPL-2.0",
+    "GPL-3.0-or-later",
+    "LGPL-2.1-or-later",
+    "LGPL-2.1-or-later WITH GCC-exception-2.0",
+    "CC0-1.0",
+    "Unlicense",
+    "NCSA",
+    "BSL-1.0",
+    "OpenSSL",
+]