diff --git a/pkgs/applications/misc/font-manager/default.nix b/pkgs/applications/misc/font-manager/default.nix
index 5df34c84f096..dad954900124 100644
--- a/pkgs/applications/misc/font-manager/default.nix
+++ b/pkgs/applications/misc/font-manager/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, meson, ninja, gettext, python3,
+{ stdenv, fetchFromGitHub, meson, ninja, gettext, python3, fetchpatch,
   pkgconfig, libxml2, json-glib , sqlite, itstool, librsvg,
   vala, gtk3, gnome3, desktop-file-utils, wrapGAppsHook, gobject-introspection
 }:
@@ -42,6 +42,15 @@ stdenv.mkDerivation rec {
     "-Ddisable_pycompile=true"
   ];
 
+  patches = [
+    # fix build with Vala 0.46
+    (fetchpatch {
+      url = "https://github.com/FontManager/font-manager/commit/c73b40de11f376f4515a0edfe97fb3721a264b35.patch";
+      sha256 = "0lacwsifgvda2r3z6j2a0svdqr6mgav7zkvih35xa8155y8wfpnw";
+      excludes = [ "fedora/font-manager.spec" ];
+    })
+  ];
+
   postPatch = ''
     chmod +x meson_post_install.py
     patchShebangs meson_post_install.py
@@ -60,7 +69,6 @@ stdenv.mkDerivation rec {
       Font Manager is NOT a professional-grade font management solution.
     '';
     license = licenses.gpl3;
-    repositories.git = https://github.com/FontManager/master;
     platforms = platforms.unix;
     maintainers = [ maintainers.romildo ];
   };
diff --git a/pkgs/applications/misc/grip/default.nix b/pkgs/applications/misc/grip/default.nix
index e1dd94471cb0..b7df9b49fb3f 100644
--- a/pkgs/applications/misc/grip/default.nix
+++ b/pkgs/applications/misc/grip/default.nix
@@ -15,6 +15,9 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "format" ];
 
+  # glib-2.62 deprecations
+  NIX_CFLAGS_COMPILE = [ "-DGLIB_DISABLE_DEPRECATION_WARNINGS" ];
+
   meta = {
     description = "GTK-based audio CD player/ripper";
     homepage = http://nostatic.org/grip;
diff --git a/pkgs/applications/misc/gxneur/default.nix b/pkgs/applications/misc/gxneur/default.nix
index 7d19a9cb1108..6e6145e79086 100644
--- a/pkgs/applications/misc/gxneur/default.nix
+++ b/pkgs/applications/misc/gxneur/default.nix
@@ -8,7 +8,8 @@ stdenv.mkDerivation {
     sha256 = "0avmhdcj0hpr55fc0iih8fjykmdhn34c8mwdnqvl8jh4nhxxchxr";
   };
 
-  NIX_CFLAGS_COMPILE = "-Wno-deprecated-declarations";
+  # glib-2.62 deprecations
+  NIX_CFLAGS_COMPILE = [ "-DGLIB_DISABLE_DEPRECATION_WARNINGS" ];
 
   nativeBuildInputs = [ pkgconfig intltool ];
   buildInputs = [
diff --git a/pkgs/applications/misc/pdfpc/default.nix b/pkgs/applications/misc/pdfpc/default.nix
index c0dca0564768..1adab6b70a3e 100644
--- a/pkgs/applications/misc/pdfpc/default.nix
+++ b/pkgs/applications/misc/pdfpc/default.nix
@@ -1,5 +1,5 @@
-{ stdenv, fetchFromGitHub, cmake, makeWrapper, pkgconfig, vala, gtk3, libgee
-, poppler, libpthreadstubs, gstreamer, gst-plugins-base, librsvg, pcre, gobject-introspection }:
+{ stdenv, fetchFromGitHub, cmake, pkgconfig, vala, gtk3, libgee, fetchpatch
+, poppler, libpthreadstubs, gstreamer, gst-plugins-base, librsvg, pcre, gobject-introspection, wrapGAppsHook }:
 
 stdenv.mkDerivation rec {
   name = "${product}-${version}";
@@ -17,16 +17,20 @@ stdenv.mkDerivation rec {
     cmake pkgconfig vala
     # For setup hook
     gobject-introspection
+    wrapGAppsHook
   ];
   buildInputs = [ gstreamer gst-plugins-base gtk3 libgee poppler
-    libpthreadstubs makeWrapper librsvg pcre ];
+    libpthreadstubs librsvg pcre ];
 
   cmakeFlags = stdenv.lib.optionalString stdenv.isDarwin "-DMOVIES=OFF";
 
-  postInstall = ''
-    wrapProgram $out/bin/pdfpc \
-      --set GDK_PIXBUF_MODULE_FILE "$GDK_PIXBUF_MODULE_FILE"
-  '';
+  patches = [
+    # Fix build vala 0.46
+    (fetchpatch {
+      url = "https://github.com/pdfpc/pdfpc/commit/bbc16b97ecbdcdd22c2dc827a5c0e8b569073312.patch";
+      sha256 = "0wi1rqcvg65cxnxvmvavcvghqyksnpijq1p91m57jaby3hb0pdcy";
+    })
+  ];
 
   meta = with stdenv.lib; {
     description = "A presenter console with multi-monitor support for PDF files";
diff --git a/pkgs/desktops/deepin/deepin-terminal/default.nix b/pkgs/desktops/deepin/deepin-terminal/default.nix
index 11032fba0e79..bb2ab7bc8a16 100644
--- a/pkgs/desktops/deepin/deepin-terminal/default.nix
+++ b/pkgs/desktops/deepin/deepin-terminal/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, pkgconfig, cmake, ninja, vala,
+{ stdenv, fetchFromGitHub, pkgconfig, cmake, ninja, vala_0_44,
   gettext, at-spi2-core, dbus, epoxy, expect, gtk3, json-glib,
   libXdmcp, libgee, libpthreadstubs, librsvg, libsecret, libtasn1,
   libxcb, libxkbcommon, p11-kit, pcre, vte, wnck, libselinux, gnutls, pcre2,
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     pkgconfig
     cmake
     ninja
-    vala
+    vala_0_44 # xcb.vapi:411.3-411.48: error: missing return statement at end of subroutine body
     gettext
     libselinux libsepol utillinux # required by gio
     deepin.setupHook
diff --git a/pkgs/desktops/lxqt/libfm-qt/default.nix b/pkgs/desktops/lxqt/libfm-qt/default.nix
index c214f0b3dcd4..39cece7724eb 100644
--- a/pkgs/desktops/lxqt/libfm-qt/default.nix
+++ b/pkgs/desktops/lxqt/libfm-qt/default.nix
@@ -5,14 +5,14 @@
 }:
 
 mkDerivation rec {
-  pname = "libfm-qt";
-  version = "0.14.1";
+  pname = "libfm-qt-unstable";
+  version = "2019-09-22";
 
   src = fetchFromGitHub {
     owner = "lxqt";
-    repo = pname;
-    rev = version;
-    sha256 = "00rn5i16h659zyp1dx213nc3jz7rx9phiw71zf6nspxzxsb8w2sc";
+    repo = "libfm-qt";
+    rev = "7c94e9efb996df0602f1f2b34b0216ba9b6df498";
+    sha256 = "1fnli2kh7n4hxmqwcb1n06lyk67d9a2fx6z70gas5jzym7r2h5vw";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/desktops/lxqt/lxqt-archiver/default.nix b/pkgs/desktops/lxqt/lxqt-archiver/default.nix
index 07a603364d78..205ea2fd2016 100644
--- a/pkgs/desktops/lxqt/lxqt-archiver/default.nix
+++ b/pkgs/desktops/lxqt/lxqt-archiver/default.nix
@@ -3,13 +3,13 @@
 mkDerivation rec {
   # pname = "lxqt-archiver";
   pname = "lxqt-archiver-unstable";
-  version = "2019-09-15";
+  version = "2019-09-25";
 
   src = fetchFromGitHub {
     owner = "lxqt";
-    repo = pname;
-    rev = "1e657b6a3e68c32f042d583872eca39a5d4b820f";
-    sha256 = "1vc9pzxrhznp65gdkzj3fzzivfqy712mwcxp3r25ar59d54alfpj";
+    repo = "lxqt-archiver";
+    rev = "62501255434b2ba6a8fd043a5af13dc0df038a5b";
+    sha256 = "1af58k68karmnay7xgngzlmcgkmvx6hay5m1xbl5id9hh16n20in";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/tools/misc/birdfont/default.nix b/pkgs/tools/misc/birdfont/default.nix
index 092c83114e79..9dc3eb86e79d 100644
--- a/pkgs/tools/misc/birdfont/default.nix
+++ b/pkgs/tools/misc/birdfont/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, pkgconfig, python3, xmlbird,
-cairo, gdk-pixbuf, libgee, glib, gtk3, webkitgtk, libnotify, sqlite, vala,
+cairo, gdk-pixbuf, libgee, glib, gtk3, webkitgtk, libnotify, sqlite, vala_0_44,
 gobject-introspection, gsettings-desktop-schemas, wrapGAppsHook }:
 
 stdenv.mkDerivation rec {
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0dr2cnvq30wak0j2k8089is7fvhw0ppwkfrrw1m649s2b95wav3q";
   };
 
-  nativeBuildInputs = [ python3 pkgconfig vala gobject-introspection wrapGAppsHook ];
+  nativeBuildInputs = [ python3 pkgconfig vala_0_44 gobject-introspection wrapGAppsHook ];
   buildInputs = [ xmlbird libgee cairo gdk-pixbuf glib gtk3 webkitgtk libnotify sqlite gsettings-desktop-schemas ];
 
   postPatch = "patchShebangs .";