srvc: fix build on darwin, set meta.mainProgram

pkgs/applications/version-management/srvc/default.nix

@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, rustPlatform, stdenv, Security }:
+{ lib, rustPlatform, fetchFromGitHub, stdenv, Security }:
 
 rustPlatform.buildRustPackage rec {
   pname = "srvc";
@@ -13,6 +13,9 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "sha256-nJM7/w4awbCZQysUOSTO6bfsBXO3agJRdp1RyRZhtUY=";
 
+  # remove timeouts in tests to make them less flaky
+  patches = [ ./tests-no-timeout.patch ];
+
   buildInputs = lib.optionals stdenv.isDarwin [
     Security
   ];
@@ -22,5 +25,6 @@ rustPlatform.buildRustPackage rec {
     homepage = "https://github.com/insilica/rs-srvc";
     license = licenses.asl20;
     maintainers = with maintainers; [ john-shaffer ];
+    mainProgram = "sr";
   };
 }

pkgs/applications/version-management/srvc/tests-no-timeout.patch

@@ -0,0 +1,36 @@
+--- a/tests/common/mod.rs
++++ b/tests/common/mod.rs
+@@ -1,15 +1,13 @@
+ #![allow(dead_code)]
+ 
+ use std::path::PathBuf;
+-use std::time::Duration;
+ 
+ use assert_cmd::Command;
+ #[cfg(unix)]
+ use rexpect::session::PtySession;
+ 
+-pub fn cmd(timeout_millis: u64) -> Command {
++pub fn cmd(_: u64) -> Command {
+     let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME")).unwrap();
+-    cmd.timeout(Duration::from_millis(timeout_millis));
+     cmd.env_remove("RUST_BACKTRACE");
+     cmd
+ }
+@@ -19,14 +17,14 @@ pub fn spawn(
+     dir: &str,
+     args: Vec<&str>,
+     timestamp_override: u64,
+-    timeout_millis: u64,
++    _: u64,
+ ) -> Result<PtySession, rexpect::errors::Error> {
+     let mut cmd = std::process::Command::new(env!("CARGO_BIN_EXE_sr"));
+     cmd.args(args);
+     cmd.current_dir(dir);
+     cmd.env("SR_TIMESTAMP_OVERRIDE", timestamp_override.to_string());
+     cmd.env_remove("RUST_BACKTRACE");
+-    Ok(rexpect::session::spawn_command(cmd, Some(timeout_millis))?)
++    rexpect::session::spawn_command(cmd, None)
+ }
+ 
+ pub fn remove_sink(dir: &str) -> Result<(), std::io::Error> {