SCSS relative path support, set cwd of server to eww config directory (#110)

src/main.rs

@@ -90,6 +90,7 @@ fn main() {
                 } else {
                     log::info!("Initializing Eww server.");
                     let _ = std::fs::remove_file(&*crate::IPC_SOCKET_PATH);
+
                     println!("Run `eww logs` to see any errors, warnings or information while editing your configuration.");
                     server::initialize_server(config)?;
                 }

src/server.rs

@@ -26,6 +26,7 @@ pub fn initialize_server(config_dir_override: Option<std::path::PathBuf>) -> Res
         .parent()
         .context("config file did not have a parent?!")?
         .to_owned();
+    std::env::set_current_dir(&config_dir).with_context(|| { format!("Failed to change working directory to {}", config_dir.display()) } )?;
     let scss_file_path = config_dir.join("eww.scss");
 
     log::info!("reading configuration from {:?}", &config_file_path);

src/util.rs

@@ -52,10 +52,12 @@ macro_rules! loop_select {
 
 /// read an scss file, replace all environment variable references within it and
 /// then parse it into css.
-pub fn parse_scss_from_file<P: AsRef<Path>>(path: P) -> Result<String> {
-    let scss_content = replace_env_var_references(std::fs::read_to_string(path)?);
-    grass::from_string(scss_content, &grass::Options::default())
-        .map_err(|err| anyhow!("encountered SCSS parsing error: {:?}", err))
+pub fn parse_scss_from_file(path: &Path) -> Result<String> {
+    let config_dir = path.parent().context("Given SCSS file has no parent directory?!")?;
+    let scss_file_content = std::fs::read_to_string(path).with_context(|| { format!("Given SCSS File Doesnt Exist! {}", path.display()) })?;
+    let file_content = replace_env_var_references(scss_file_content);
+    let grass_config = grass::Options::default().load_path(config_dir);
+    grass::from_string(file_content, &grass_config).map_err(|err| anyhow!("Encountered SCSS parsing error: {:?}", err))
 }
 
 #[ext(pub, name = StringExt)]