second attempt

This reverts commit 99722302a2.

src/app.rs

@@ -186,7 +186,7 @@ impl App {
 fn add_package(package: &str) -> std::io::Result<()> {
     let status = Command::new("pkg-config")
         .arg("--exists")
-        .arg(&package)
+        .arg(package)
         .status()
         .map_err(|_| {
             std::io::Error::new(
@@ -276,7 +276,7 @@ fn gen_compile_commands(mode: &Option<String>) -> std::io::Result<()> {
         .collect();
 
     let json = serde_json::to_string_pretty(&entries)
-        .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, format!("{e}")))?;
+        .map_err(|e| std::io::Error::other(format!("{e}")))?;
 
     std::fs::write("compile_commands.json", json)?;
 
@@ -330,7 +330,19 @@ fn create_project<P: AsRef<Path>>(directory: P) -> std::io::Result<()> {
     std::fs::write("src/main.c", MAIN_C)?;
     std::fs::write(".gitignore", GITIGNORE)?;
 
-    let config = crate::config::Config::new(&pathdir.to_string_lossy());
+    let lossy = pathdir.to_string_lossy();
+
+    let app_name = if lossy == "." {
+        let root = std::env::current_dir()?;
+        root.file_name()
+            .expect("a valid file name")
+            .to_string_lossy()
+            .to_string()
+    } else {
+        lossy.to_string()
+    };
+
+    let config = crate::config::Config::new(&app_name);
 
     let serial = toml::to_string_pretty(&config).expect("a valid TOML structure");
 
@@ -381,45 +393,43 @@ fn build(mode: &Option<String>, force_recompile: bool) -> std::io::Result<()> {
     let mut extra_compile_flags: Vec<String> = Vec::new();
     let mut extra_link_flags: Vec<String> = Vec::new();
 
-    if let Some(deps) = &conf.dependencies {
-        if !deps.is_empty() {
-            let cflags = Command::new("pkg-config")
-                .arg("--cflags")
-                .args(deps)
-                .output()
-                .map_err(|_| {
-                    std::io::Error::new(std::io::ErrorKind::NotFound, "pkg-config not found")
-                })?;
-            if !cflags.status.success() {
-                return Err(std::io::Error::new(
-                    std::io::ErrorKind::Other,
-                    "pkg-config --cflags failed - is the package installed?",
-                ));
-            }
-
-            let libs = Command::new("pkg-config")
-                .arg("--libs")
-                .args(deps)
-                .output()
-                .map_err(|_| {
-                    std::io::Error::new(std::io::ErrorKind::NotFound, "pkg-config not found")
-                })?;
-            if !libs.status.success() {
-                return Err(std::io::Error::new(
-                    std::io::ErrorKind::Other,
-                    "pkg-config --libs failed - is the pacakge installed?",
-                ));
-            }
-
-            extra_compile_flags = String::from_utf8_lossy(&cflags.stdout)
-                .split_whitespace()
-                .map(str::to_owned)
-                .collect();
-            extra_link_flags = String::from_utf8_lossy(&libs.stdout)
-                .split_whitespace()
-                .map(str::to_owned)
-                .collect();
+    if let Some(deps) = &conf.dependencies
+        && !deps.is_empty()
+    {
+        let cflags = Command::new("pkg-config")
+            .arg("--cflags")
+            .args(deps)
+            .output()
+            .map_err(|_| {
+                std::io::Error::new(std::io::ErrorKind::NotFound, "pkg-config not found")
+            })?;
+        if !cflags.status.success() {
+            return Err(std::io::Error::other(
+                "pkg-config --cflags failed - is the package installed?",
+            ));
         }
+
+        let libs = Command::new("pkg-config")
+            .arg("--libs")
+            .args(deps)
+            .output()
+            .map_err(|_| {
+                std::io::Error::new(std::io::ErrorKind::NotFound, "pkg-config not found")
+            })?;
+        if !libs.status.success() {
+            return Err(std::io::Error::other(
+                "pkg-config --libs failed - is the pacakge installed?",
+            ));
+        }
+
+        extra_compile_flags = String::from_utf8_lossy(&cflags.stdout)
+            .split_whitespace()
+            .map(str::to_owned)
+            .collect();
+        extra_link_flags = String::from_utf8_lossy(&libs.stdout)
+            .split_whitespace()
+            .map(str::to_owned)
+            .collect();
     }
 
     let source_files: Vec<PathBuf> = glob("src/*.c")
@@ -455,10 +465,10 @@ fn build(mode: &Option<String>, force_recompile: bool) -> std::io::Result<()> {
                 .status()?;
 
             if !status.success() {
-                return Err(std::io::Error::new(
-                    std::io::ErrorKind::Other,
-                    format!("failed to compile {}", src.display()),
-                ));
+                return Err(std::io::Error::other(format!(
+                    "failed to compile {}",
+                    src.display()
+                )));
             }
 
             std::fs::write(&hash_path, &hash)?;
@@ -493,15 +503,12 @@ fn build(mode: &Option<String>, force_recompile: bool) -> std::io::Result<()> {
         .status()?;
 
     if !status.success() {
-        return Err(std::io::Error::new(
-            std::io::ErrorKind::Other,
-            "linking failed",
-        ));
+        return Err(std::io::Error::other("linking failed"));
     }
 
     let stop = start.elapsed();
 
-    gen_compile_commands(&mode)?;
+    gen_compile_commands(mode)?;
 
     println!(
         "   {} '{}' profile for project '{}' in {:.2}s",