5 files changed, 35 insertions, 4 deletions
diff --git a/Cargo.lock b/Cargo.lock
index 73019fabba..f12769e2f1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2038,7 +2038,8 @@ dependencies = [
  "anyhow",
  "async-trait",
  "cacao",
- "env_logger 0.10.2",
+ "chrono",
+ "fern",
  "insta",
  "log",
  "mullvad-paths",
diff --git a/installer-downloader/Cargo.toml b/installer-downloader/Cargo.toml
index a8d54d2a14..7b04f34474 100644
--- a/installer-downloader/Cargo.toml
+++ b/installer-downloader/Cargo.toml
@@ -22,8 +22,9 @@ async-trait = "0.1"
 rand = { version = "0.8.5" }
 serde = { workspace = true, features = ["derive"] }
 
-# Note: Not using workspace since we want fewer features
-env_logger = { version = "0.10.0", default-features = false }
+
+chrono = { workspace = true, features = ["clock"] }
+fern = { version = "0.6", default-features = false }
 log = { workspace = true }
 
 mullvad-update = { path = "../mullvad-update", features = ["client", "native-tls"] }
diff --git a/installer-downloader/src/lib.rs b/installer-downloader/src/lib.rs
index 13e4759086..bde7683cdc 100644
--- a/installer-downloader/src/lib.rs
+++ b/installer-downloader/src/lib.rs
@@ -3,6 +3,8 @@ pub mod controller;
 #[cfg(any(target_os = "windows", target_os = "macos"))]
 pub mod delegate;
 #[cfg(any(target_os = "windows", target_os = "macos"))]
+pub mod log;
+#[cfg(any(target_os = "windows", target_os = "macos"))]
 pub mod resource;
 #[cfg(any(target_os = "windows", target_os = "macos"))]
 pub mod temp;
diff --git a/installer-downloader/src/log.rs b/installer-downloader/src/log.rs
new file mode 100644
index 0000000000..93ff538700
--- /dev/null
+++ b/installer-downloader/src/log.rs
@@ -0,0 +1,26 @@
+use chrono::Local;
+use fern::Dispatch;
+use log::LevelFilter;
+use std::{io, path::PathBuf};
+
+pub fn init() -> Result<(), fern::InitError> {
+    Dispatch::new()
+        .format(|out, message, record| {
+            out.finish(format_args!(
+                "{} [{}] {}",
+                Local::now().format("%Y-%m-%d %H:%M:%S"),
+                record.level(),
+                message
+            ))
+        })
+        .level(LevelFilter::Debug)
+        .chain(io::stdout())
+        .chain(fern::log_file(log_path())?)
+        .apply()?;
+
+    Ok(())
+}
+
+fn log_path() -> PathBuf {
+    std::env::temp_dir().join("mullvad-downloader.log")
+}
diff --git a/installer-downloader/src/main.rs b/installer-downloader/src/main.rs
index f190377d28..7be9b76b2c 100644
--- a/installer-downloader/src/main.rs
+++ b/installer-downloader/src/main.rs
@@ -10,10 +10,11 @@ mod cacao_impl;
 mod inner {
     pub use installer_downloader::controller;
     pub use installer_downloader::delegate;
+    pub use installer_downloader::log;
     pub use installer_downloader::resource;
 
     pub fn run() {
-        env_logger::init();
+        log::init().expect("failed to set up logger");
 
         let rt = tokio::runtime::Builder::new_multi_thread()
             .enable_all()