2 files changed, 74 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/zchunk/0001-meson-fix-argp-standalone.patch b/nixpkgs/pkgs/development/libraries/zchunk/0001-meson-fix-argp-standalone.patch
new file mode 100644
index 000000000000..cd51d17b1500
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/zchunk/0001-meson-fix-argp-standalone.patch
@@ -0,0 +1,18 @@
+diff --git a/meson.build b/meson.build
+index 1c6b32d..aa7dd25 100644
+--- a/meson.build
++++ b/meson.build
+@@ -58,10 +58,10 @@ endif
+ 
+ # argp-standalone dependency (if required)
+ if build_machine.system() == 'windows' or build_machine.system() == 'darwin' or build_machine.system() == 'freebsd' or not cc.links('#include <argp.h>\nstatic error_t parse_opt (int key, char *arg, struct argp_state *state) { argp_usage(state); return 0; }; void main() {}')
+-    if fs.is_dir(join_paths([get_option('prefix'), 'include']))
+-        inc += include_directories(join_paths([get_option('prefix'), 'include']))
++    argplib = cc.find_library('argp', has_headers : ['argp.h'], required: false)
++    if not argplib.found()
++        argplib = dependency('argp-standalone')
+     endif
+-    argplib = cc.find_library('argp', dirs : join_paths([get_option('prefix'), 'lib']))
+ else
+     argplib = dependency('', required : false)
+ endif
diff --git a/nixpkgs/pkgs/development/libraries/zchunk/default.nix b/nixpkgs/pkgs/development/libraries/zchunk/default.nix
new file mode 100644
index 000000000000..815326e53838
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/zchunk/default.nix
@@ -0,0 +1,56 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, argp-standalone
+, curl
+, meson
+, ninja
+, pkg-config
+, zstd
+}:
+
+stdenv.mkDerivation rec {
+  pname = "zchunk";
+  version = "1.2.2";
+
+  src = fetchFromGitHub {
+    owner = "zchunk";
+    repo = pname;
+    rev = version;
+    hash = "sha256-/gtkw020pybUDUeYydXgJ4PLvdOqZ0RbrLOfNMDaCmA=";
+  };
+
+  # unbreak on darwin by finding argp-standalone, based on the patch from
+  # buildroot:
+  #    https://github.com/buildroot/buildroot/raw/master/package/zchunk/0001-meson-fix-argp-standalone-wrap-and-find_library.patch
+  patches = lib.optional stdenv.isDarwin ./0001-meson-fix-argp-standalone.patch;
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+  ];
+
+  buildInputs = [
+    curl
+    zstd
+  ] ++ lib.optional stdenv.isDarwin argp-standalone;
+
+  outputs = [ "out" "lib" "dev" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/zchunk/zchunk";
+    description = "File format designed for highly efficient deltas while maintaining good compression";
+    longDescription = ''
+      zchunk is a compressed file format that splits the file into independent
+      chunks. This allows you to only download changed chunks when downloading a
+      new version of the file, and also makes zchunk files efficient over rsync.
+
+      zchunk files are protected with strong checksums to verify that the file
+      you downloaded is, in fact, the file you wanted.
+    '';
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.unix;
+  };
+}