Merge pull request #1545 from ChanTsune/gix-config-value-for-wasi

 Support compile `gix-config-value` to wasm32-wasi

Author: Byron

.github/workflows/ci.yml

@@ -209,7 +209,7 @@ jobs:
       - name: Install Rust
         run: rustup update stable && rustup default stable && rustup target add ${{ matrix.target }}
       - uses: Swatinem/rust-cache@v2
-      - run: set +x; for name in gix-actor gix-attributes gix-bitmap gix-chunk gix-command gix-commitgraph gix-date gix-glob gix-hash gix-hashtable gix-mailmap gix-object gix-packetline gix-path gix-quote gix-refspec gix-revision gix-traverse gix-validate; do (cd $name && cargo build --target ${{ matrix.target }}); done
+      - run: set +x; for name in gix-actor gix-attributes gix-bitmap gix-chunk gix-command gix-commitgraph gix-config-value gix-date gix-glob gix-hash gix-hashtable gix-mailmap gix-object gix-packetline gix-path gix-pathspec gix-prompt gix-quote gix-refspec gix-revision gix-traverse gix-validate; do (cd $name && cargo build --target ${{ matrix.target }}); done
         name: crates without feature toggles
       - run: set +x; for feature in progress fs-walkdir-parallel parallel io-pipe crc32 zlib zlib-rust-backend fast-sha1 rustsha1 cache-efficiency-debug; do (cd gix-features && cargo build --features $feature --target ${{ matrix.target }}); done
         name: features of gix-features

gix-config-value/src/path.rs

@@ -52,8 +52,13 @@ pub mod interpolate {
     /// or any other error occurred.
     /// It can be used as `home_for_user` parameter in [`Path::interpolate()`][crate::Path::interpolate()].
     #[cfg_attr(windows, allow(unused_variables))]
+    #[cfg_attr(all(target_family = "wasm", not(target_os = "emscripten")), allow(unused_variables))]
     pub fn home_for_user(name: &str) -> Option<PathBuf> {
-        #[cfg(not(any(target_os = "android", target_os = "windows")))]
+        #[cfg(not(any(
+            target_os = "android",
+            target_os = "windows",
+            all(target_family = "wasm", not(target_os = "emscripten"))
+        )))]
         {
             let cname = std::ffi::CString::new(name).ok()?;
             // SAFETY: calling this in a threaded program that modifies the pw database is not actually safe.
@@ -71,7 +76,11 @@ pub mod interpolate {
                 Some(std::ffi::OsStr::from_bytes(cstr.to_bytes()).into())
             }
         }
-        #[cfg(any(target_os = "android", target_os = "windows"))]
+        #[cfg(any(
+            target_os = "android",
+            target_os = "windows",
+            all(target_family = "wasm", not(target_os = "emscripten"))
+        ))]
         {
             None
         }