crate2nix: init at 0.8.0

crate2nix is a tool that "generates nix build files for rust crates
using cargo".

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/development/tools/rust/crate2nix/default.nix

@@ -0,0 +1,47 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, makeWrapper
+
+, cargo
+, nix
+, nix-prefetch-git
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "crate2nix";
+  version = "0.8.0";
+
+  src = fetchFromGitHub
+    {
+      owner = "kolloch";
+      repo = pname;
+      rev = version;
+      sha256 = "sha256-pqg1BsEq3kGmUzt1zpQvXgdnRcIsiuIyvtUBi3VxtZ4=";
+    } + "/crate2nix";
+
+  cargoSha256 = "sha256-dAMWrGNMleQ3lDbG46Hr4qvCyxR+QcPOUZw9r2/CxV4=";
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  # Tests use nix(1), which tries (and fails) to set up /nix/var inside the
+  # sandbox
+  doCheck = false;
+
+  postFixup = ''
+    wrapProgram $out/bin/crate2nix \
+        --suffix PATH ":" ${lib.makeBinPath [ cargo nix nix-prefetch-git ]}
+  '';
+
+  meta = with lib; {
+    description = "A Nix build file generator for Rust crates.";
+    longDescription = ''
+      Crate2nix generates Nix files from Cargo.toml/lock files
+      so that you can build every crate individually in a Nix sandbox.
+    '';
+    homepage = "https://github.com/kolloch/crate2nix";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ kolloch andir cole-h ];
+    platforms = platforms.all;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -9969,6 +9969,8 @@ julia_15 = callPackage ../development/compilers/julia/1.5.nix {
     inherit (darwin.apple_sdk.frameworks) Security;
   };
 
+  crate2nix = callPackage ../development/tools/rust/crate2nix { };
+
   maturin = callPackage ../development/tools/rust/maturin { };
   inherit (rustPackages) rls;
   rustfmt = rustPackages.rustfmt;