Fix new sidebar changes

Author: GuillaumeGomez

src/utils/rustc_version.rs

@@ -43,8 +43,12 @@ fn parse_rustc_date<S: AsRef<str>>(version: S) -> Result<Date<Utc>> {
 /// generate this version of this crate.
 pub fn get_correct_docsrs_style_file(version: &str) -> Result<String> {
     let date = parse_rustc_date(version)?;
+    // This is the date where https://github.com/rust-lang/rust/pull/92692 was merged.
+    if Utc.ymd(2022, 1, 19) < date {
+        Ok("rustdoc-2022-01-19.css".to_owned())
+    }
     // This is the date where https://github.com/rust-lang/rust/pull/91356 was merged.
-    if Utc.ymd(2021, 12, 5) < date {
+    else if Utc.ymd(2021, 12, 5) < date {
         // If this is the new rustdoc layout, we need the newer docs.rs CSS file.
         Ok("rustdoc-2021-12-05.css".to_owned())
     } else {

templates/style/rustdoc-2022-01-19.scss

@@ -0,0 +1,44 @@
+// FIXME: Use modules
+@import "rustdoc-common";
+
+// This file is needed to overload the previous docs.rs style. It is added into crates generated
+// using rustdoc after https://github.com/rust-lang/rust/pull/92692 has been merged.
+
+#rustdoc_body_wrapper {
+    padding: 0;
+
+    .sidebar {
+        margin-top: 0;
+        top: $top-navbar-height;
+        height: calc(100vh - $top-navbar-height);
+        /* Since we use `overflow-wrap: anywhere;`, we never have the need for a X scrollbar... */
+        overflow-x: hidden;
+
+        .sidebar-menu {
+            top: $top-navbar-height;
+        }
+    }
+
+    main {
+        padding-bottom: 50px;
+    }
+}
+
+div.container-rustdoc {
+    > .docs-rs-footer {
+        bottom: 0;
+        right: 0;
+    }
+}
+
+div.container-rustdoc:not(.source) {
+    > .docs-rs-footer {
+        left: 200px;
+    }
+}
+
+div.rustdoc {
+    #sidebar-toggle {
+        top: 0;
+    }
+}