From 806b05c39f56c4b506520b5e2c010afc02f6efe4 Mon Sep 17 00:00:00 2001
From: Andrew Poelstra <apoelstra@wpsoftware.net>
Date: Wed, 22 Feb 2023 03:39:26 +0000
Subject: [PATCH] Add ability to override lockfile from tools.nix

---
 tools.nix | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/tools.nix b/tools.nix
index 5fc8d0d6..c9e08586 100644
--- a/tools.nix
+++ b/tools.nix
@@ -30,10 +30,14 @@ rec {
     , src
     , cargoToml ? "Cargo.toml"
     , additionalCargoNixArgs ? [ ]
+    , overrideLockFile ? null
     }:
     let
       crateDir = dirOf (src + "/${cargoToml}");
-      vendor = internal.vendorSupport { inherit crateDir; };
+      vendor = internal.vendorSupport {
+        inherit crateDir;
+        additionalLockFiles = if overrideLockFile == null then [ ] else [ overrideLockFile ];
+      };
     in
     stdenv.mkDerivation {
       name = "${name}-crate2nix";
@@ -52,6 +56,11 @@ rec {
         export CARGO_HOME="$out/cargo"
         export HOME="$out"
 
+        ${if overrideLockFile == null then
+          ""
+        else
+          "cp ${overrideLockFile} ./Cargo.lock"}
+
         cp ${vendor.cargoConfig} $out/cargo/config
 
         crate_hashes="$out/crate-hashes.json"
@@ -176,7 +185,7 @@ rec {
         rev = lib.last splitQuestion;
       };
 
-    vendorSupport = { crateDir ? ./., ... }:
+    vendorSupport = { crateDir ? ./., additionalLockFiles ? [ ], ... }:
       rec {
         toPackageId = { name, version, source, ... }:
           "${name} ${version} (${source})";
@@ -198,7 +207,7 @@ rec {
                 builtins.map toLockFile subdirs
               else [ ];
           in
-          fromCrateDir ++ fromSources;
+          fromCrateDir ++ fromSources ++ additionalLockFiles;
 
         locked =
           let