2 files changed, 84 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/libraries/libical/default.nix b/nixpkgs/pkgs/development/libraries/libical/default.nix
new file mode 100644
index 000000000000..d8881b929a05
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/libical/default.nix
@@ -0,0 +1,55 @@
+{ stdenv, fetchFromGitHub, perl, pkgconfig, cmake, ninja, vala, gobject-introspection
+, python3, tzdata, glib, libxml2, icu }:
+
+stdenv.mkDerivation rec {
+  pname = "libical";
+  version = "3.0.4";
+
+  outputs = [ "out" "dev" ]; #"devdoc" ];
+
+  src = fetchFromGitHub {
+    owner = "libical";
+    repo = "libical";
+    rev = "v${version}";
+    sha256 = "1qgpbdjd6jsivw87v5w52268kqp0rv780kli8cgb3ndlv592wlbm";
+  };
+
+  nativeBuildInputs = [
+    perl pkgconfig cmake ninja vala gobject-introspection
+    (python3.withPackages (pkgs: with pkgs; [ pygobject3 ])) # running libical-glib tests
+# Docs building fails: https://github.com/NixOS/nixpkgs/pull/61657#issuecomment-495579489
+#    gtk-doc docbook_xsl docbook_xml_dtd_43 # docs
+  ];
+  buildInputs = [ glib libxml2 icu ];
+
+  cmakeFlags = [
+    "-DGOBJECT_INTROSPECTION=True"
+    "-DICAL_GLIB_VAPI=True"
+  ];
+
+  patches = [
+    # TODO: upstream this patch
+    # https://github.com/libical/libical/issues/350
+    ./respect-env-tzdir.patch
+  ];
+
+  # Using install check so we do not have to manually set
+  # LD_LIBRARY_PATH and GI_TYPELIB_PATH variables
+  doInstallCheck = true;
+  enableParallelChecking = false;
+  installCheckPhase = ''
+    runHook preInstallCheck
+
+    export TZDIR=${tzdata}/share/zoneinfo
+    ctest --output-on-failure
+
+    runHook postInstallCheck
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = https://github.com/libical/libical;
+    description = "An Open Source implementation of the iCalendar protocols";
+    license = licenses.mpl20;
+    platforms = platforms.unix;
+  };
+}
diff --git a/nixpkgs/pkgs/development/libraries/libical/respect-env-tzdir.patch b/nixpkgs/pkgs/development/libraries/libical/respect-env-tzdir.patch
new file mode 100644
index 000000000000..59d23e490e5a
--- /dev/null
+++ b/nixpkgs/pkgs/development/libraries/libical/respect-env-tzdir.patch
@@ -0,0 +1,29 @@
+--- a/src/libical/icaltz-util.c
++++ b/src/libical/icaltz-util.c
+@@ -94,9 +94,9 @@
+ static const char *zdir = NULL;
+ 
+ static const char *search_paths[] = {
++    "/etc/zoneinfo",
+     "/usr/share/zoneinfo",
+     "/usr/lib/zoneinfo",
+-    "/etc/zoneinfo",
+     "/usr/share/lib/zoneinfo"
+ };
+ 
+@@ -178,6 +178,15 @@
+     const char *fname = ZONES_TAB_SYSTEM_FILENAME;
+     size_t i, num_search_paths;
+ 
++   const char *env_tzdir = getenv ("TZDIR");
++   if (env_tzdir) {
++       sprintf (file_path, "%s/%s", env_tzdir, fname);
++       if (!access (file_path, F_OK|R_OK)) {
++           zdir = env_tzdir;
++           return;
++       }
++   }
++
+     num_search_paths = sizeof(search_paths) / sizeof(search_paths[0]);
+     for (i = 0; i < num_search_paths; i++) {
+         snprintf(file_path, MAXPATHLEN, "%s/%s", search_paths[i], fname);