eva: 0.2.5 -> 0.2.7

Please note that this update is pinned to a git rev as there's no tag
for 0.2.7, but a release on crates.io[1], this is reported in the repo[2].

Also added a patch to fix the test-suite[3].

[1] https://crates.io/crates/eva/0.2.7
[2] https://github.com/NerdyPepper/eva/issues/32
[3] https://github.com/NerdyPepper/eva/pull/33

pkgs/tools/misc/eva/default.nix

@@ -1,24 +1,32 @@
-{ stdenv, fetchFromGitHub, rustPlatform }:
+{ stdenv, fetchFromGitHub, rustPlatform, fetchpatch }:
 
 rustPlatform.buildRustPackage rec {
   pname = "eva";
-  version = "0.2.5";
+  version = "0.2.7";
 
-  cargoSha256 = "1zns4xspw9w1f84sf8cz30mp2fl1jyjc2ca09gkqhzhgaj055y7k";
+  cargoSha256 = "0n3xvlmp4l925nbz8lx6dr9yrrfh6z7b9z8wd6sli3a1dq26d6bg";
 
   src = fetchFromGitHub {
     owner = "NerdyPepper";
     repo = "${pname}";
-    rev = "v${version}";
-    sha256 = "1vqr6z4vicqx1lm5ll09za4jh8rki2qbav1pawz15hqqzps3y8h1";
+    rev = "6ce0fc0212a34ffb647b24d9d903029ac4518165";
+    sha256 = "10242vnq2ph0g3p2hdacs4lmx3f474xm04nadplxbpv9xh4nbag3";
   };
 
   cargoPatches = [ ./Cargo.lock.patch ];
 
+  patches = [
+    # to fix the test suite (can be removed as soon as #33 is merged).
+    (fetchpatch {
+      url = https://github.com/NerdyPepper/eva/commit/cacf51dbb9748b1dbe97b35f3c593a0a272bd4db.patch;
+      sha256 = "11q7dkz2x1888f3awnlr1nbbxzzfjrr46kd0kk6sgjdkyfh50cvv";
+    })
+  ];
+
   meta = with stdenv.lib; {
     description = "A calculator REPL, similar to bc";
     homepage = https://github.com/NerdyPepper/eva;
     license = licenses.mit;
-    maintainers = with maintainers; [ nrdxp ];
+    maintainers = with maintainers; [ nrdxp ma27 ];
   };
 }