tests.importCargoLock.*: remove usage of lib.fileset

The usage of lib.fileset was forbidden in nixpkgs due to a bug in nix.
For more information, see 8725e466ef and the PR it was merged in #369694

pkgs/build-support/rust/test/import-cargo-lock/basic-dynamic/default.nix

@@ -1,21 +1,12 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "basic-dynamic";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
-  cargoLock.lockFileContents = builtins.readFile ./Cargo.lock;
+  cargoLock.lockFileContents = builtins.readFile ./package/Cargo.lock;
 
   doInstallCheck = true;
 

pkgs/build-support/rust/test/import-cargo-lock/basic-sparse/default.nix

@@ -1,23 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "basic-sparse";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./.cargo/config.toml
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     extraRegistries = {
       "sparse+https://index.crates.io/" = "https://static.crates.io/crates";
     };

pkgs/build-support/rust/test/import-cargo-lock/basic/default.nix

@@ -1,22 +1,13 @@
 { lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+
 rustPlatform.buildRustPackage {
   pname = "basic";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
   };
 
   doInstallCheck = true;

pkgs/build-support/rust/test/import-cargo-lock/git-dependency-branch/default.nix

@@ -1,22 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "git-dependency-branch";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     outputHashes = {
       "rand-0.8.4" = "1ilk9wvfw3mdm57g199ys8f5nrgdrh0n3a4c8b7nz6lgnqvfrv6z";
     };

pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev-non-workspace-nested-crate/default.nix

@@ -3,23 +3,13 @@
   pkg-config,
   openssl,
   zlib,
-  lib,
 }:
-let
-  fs = lib.fileset;
-in
+
 rustPlatform.buildRustPackage {
   pname = "git-dependency-rev-non-workspace-nested-crate";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   nativeBuildInputs = [
     pkg-config
@@ -31,7 +21,7 @@ rustPlatform.buildRustPackage {
   ];
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     outputHashes = {
       "cargo-test-macro-0.1.0" = "1yy1y1d523xdzwg1gc77pigbcwsbawmy4b7vw8v21m7q957sk0c4";
     };

pkgs/build-support/rust/test/import-cargo-lock/git-dependency-rev/default.nix

@@ -1,22 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "git-dependency-rev";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     outputHashes = {
       "rand-0.8.3" = "0l3p174bpwia61vcvxz5mw65a13ri3wy94z04xrnyy5lzciykz4f";
     };

pkgs/build-support/rust/test/import-cargo-lock/git-dependency-tag/default.nix

@@ -1,22 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "git-dependency-tag";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     outputHashes = {
       "rand-0.8.3" = "0l3p174bpwia61vcvxz5mw65a13ri3wy94z04xrnyy5lzciykz4f";
     };

pkgs/build-support/rust/test/import-cargo-lock/git-dependency/default.nix

@@ -1,22 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "git-dependency";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
     outputHashes = {
       "rand-0.8.3" = "0ya2hia3cn31qa8894s3av2s8j5bjwb6yq92k0jsnlx7jid0jwqa";
     };

pkgs/build-support/rust/test/import-cargo-lock/v1/default.nix

@@ -1,22 +1,13 @@
-{ lib, rustPlatform }:
-let
-  fs = lib.fileset;
-in
+{ rustPlatform }:
+
 rustPlatform.buildRustPackage {
   pname = "v1";
   version = "0.1.0";
 
-  src = fs.toSource {
-    root = ./.;
-    fileset = fs.unions [
-      ./Cargo.toml
-      ./Cargo.lock
-      ./src
-    ];
-  };
+  src = ./package;
 
   cargoLock = {
-    lockFile = ./Cargo.lock;
+    lockFile = ./package/Cargo.lock;
   };
 
   doInstallCheck = true;