From 1cd0b43ceaf4d81617502d5e62ee971e305dff9f Mon Sep 17 00:00:00 2001
From: Sridhar Ratnakumar <srid@srid.ca>
Date: Sun, 28 Jul 2024 11:10:33 -0400
Subject: [PATCH] feat: Use filterCargoSources for workspace crates

To avoid unnecessary rebuilds.

We already do this for project root (via the `src` option).
---
 nix/modules/default-crates.nix | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/nix/modules/default-crates.nix b/nix/modules/default-crates.nix
index 7448cbe..d14e372 100644
--- a/nix/modules/default-crates.nix
+++ b/nix/modules/default-crates.nix
@@ -12,8 +12,13 @@
       lib.foldl'
         (acc: pathString:
           let
-            path = "${src}/${pathString}";
-            cargoPath = "${src}/${pathString}/Cargo.toml";
+            path =
+              lib.cleanSourceWith {
+                src = "${src}/${pathString}";
+                filter = path: type:
+                  (config.rust-project.crane-lib.filterCargoSources path type);
+              };
+            cargoPath = "${path}/Cargo.toml";
             cargoToml = builtins.fromTOML (builtins.readFile cargoPath);
             name = cargoToml.package.name;
           in