Build release as a static binary

.gitignore

@@ -1,2 +1,3 @@
 /target
 .cargo
+/result

flake.nix

@@ -25,10 +25,17 @@
 
       in
       {
-        defaultPackage = naersk-lib.buildPackage ./.;
-        devShell = with pkgs; mkShell {
+        defaultPackage = naersk-lib.buildPackage {
+          src = ./.;
+          doCheck = false;
+          nativeBuildInputs = [ pkgs.pkgsStatic.stdenv.cc ];
+          CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
+          CARGO_BUILD_RUSTFLAGS = "-C target-feature=+crt-static";
+        };
+        devShell = pkgs.mkShell {
           nativeBuildInputs = [
             toolchain
+            pkgs.glibc.static
           ];
           shellHook = ''
             source $(pwd)/.env.dev

rust-toolchain.toml

@@ -1,3 +1,4 @@
 [toolchain]
 channel = "nightly-2023-05-08"
 components = [ "rustfmt", "rustc-dev", "clippy", "cargo" ]
+targets = [ "x86_64-unknown-linux-musl" ]