diff --git a/nixos/modules/installer/tools/nixos-install.sh b/nixos/modules/installer/tools/nixos-install.sh
index fc4a69aa17d3..e7cf52f5e32b 100644
--- a/nixos/modules/installer/tools/nixos-install.sh
+++ b/nixos/modules/installer/tools/nixos-install.sh
@@ -143,6 +143,23 @@ export TMPDIR=${TMPDIR:-$tmpdir}
 
 sub="auto?trusted=1"
 
+# Copy the NixOS/Nixpkgs sources to the target as the initial contents
+# of the NixOS channel.
+if [[ -z $noChannelCopy ]]; then
+    if [[ -z $channelPath ]]; then
+        channelPath="$(nix-env -p /nix/var/nix/profiles/per-user/root/channels -q nixos --no-name --out-path 2>/dev/null || echo -n "")"
+    fi
+    if [[ -n $channelPath ]]; then
+        echo "copying channel..."
+        mkdir -p "$mountPoint"/nix/var/nix/profiles/per-user/root
+        nix-env --store "$mountPoint" "${extraBuildFlags[@]}" --extra-substituters "$sub" \
+                -p "$mountPoint"/nix/var/nix/profiles/per-user/root/channels --set "$channelPath" --quiet \
+                "${verbosity[@]}"
+        install -m 0700 -d "$mountPoint"/root/.nix-defexpr
+        ln -sfn /nix/var/nix/profiles/per-user/root/channels "$mountPoint"/root/.nix-defexpr/channels
+    fi
+fi
+
 # Build the system configuration in the target filesystem.
 if [[ -z $system ]]; then
     outLink="$tmpdir/system"
@@ -167,23 +184,6 @@ nix-env --store "$mountPoint" "${extraBuildFlags[@]}" \
         --extra-substituters "$sub" \
         -p "$mountPoint"/nix/var/nix/profiles/system --set "$system" "${verbosity[@]}"
 
-# Copy the NixOS/Nixpkgs sources to the target as the initial contents
-# of the NixOS channel.
-if [[ -z $noChannelCopy ]]; then
-    if [[ -z $channelPath ]]; then
-        channelPath="$(nix-env -p /nix/var/nix/profiles/per-user/root/channels -q nixos --no-name --out-path 2>/dev/null || echo -n "")"
-    fi
-    if [[ -n $channelPath ]]; then
-        echo "copying channel..."
-        mkdir -p "$mountPoint"/nix/var/nix/profiles/per-user/root
-        nix-env --store "$mountPoint" "${extraBuildFlags[@]}" --extra-substituters "$sub" \
-                -p "$mountPoint"/nix/var/nix/profiles/per-user/root/channels --set "$channelPath" --quiet \
-                "${verbosity[@]}"
-        install -m 0700 -d "$mountPoint"/root/.nix-defexpr
-        ln -sfn /nix/var/nix/profiles/per-user/root/channels "$mountPoint"/root/.nix-defexpr/channels
-    fi
-fi
-
 # Mark the target as a NixOS installation, otherwise switch-to-configuration will chicken out.
 mkdir -m 0755 -p "$mountPoint/etc"
 touch "$mountPoint/etc/NIXOS"
diff --git a/pkgs/applications/editors/em/default.nix b/pkgs/applications/editors/em/default.nix
new file mode 100644
index 000000000000..89cc795f5674
--- /dev/null
+++ b/pkgs/applications/editors/em/default.nix
@@ -0,0 +1,29 @@
+{ lib
+, stdenv
+, fetchurl
+}:
+
+stdenv.mkDerivation rec {
+  pname = "em";
+  version = "1.0.0";
+
+  src = fetchurl {
+    url = "http://pgas.freeshell.org/C/em/${pname}-${version}.tar.gz";
+    hash = "sha256-ijMBkl7U1f9MTXgli9kUFB8ttMG6TMQnxfDMP9AblTQ=";
+  };
+
+  meta = with lib; {
+    homepage = "http://pgas.freeshell.org/C/em/";
+    description = "Editor for Mortals";
+    longDescription = ''
+      Em is a QMC variant of the standard Unix text editor - ed. It includes all
+      of ed, so the documentation for ed is fully applicable to em. Em also has
+      a number of new commands and facilities designed to improve its
+      interaction and increase its usefulness to users at fast vdu terminals
+      (such as the ITT's at QMC).
+    '';
+    license = licenses.publicDomain;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/applications/misc/copyq/default.nix b/pkgs/applications/misc/copyq/default.nix
index 5c96a3282243..1050a91e99a1 100644
--- a/pkgs/applications/misc/copyq/default.nix
+++ b/pkgs/applications/misc/copyq/default.nix
@@ -17,13 +17,13 @@
 
 mkDerivation rec {
   pname = "CopyQ";
-  version = "4.1.0";
+  version = "6.0.1";
 
   src = fetchFromGitHub {
     owner = "hluk";
     repo = "CopyQ";
     rev = "v${version}";
-    sha256 = "1iacnd9dn0mrajff80r2g5nlks5sch9lmpl633mnyqmih9dwx2li";
+    sha256 = "sha256-edrRgnjbszqJLbGLE4anCJSGApymvK0O+2ks5jWe8aw=";
   };
 
   nativeBuildInputs = [
@@ -42,15 +42,6 @@ mkDerivation rec {
     wayland
   ];
 
-  patches = [
-    # Install the bash completion script correctly
-    # Remove once 4.1.1 is released
-    (fetchpatch {
-      url = "https://github.com/hluk/CopyQ/commit/aca7222ec28589af0b08f63686104b992d63ee42.patch";
-      sha256 = "0d440d0zsdzm9cd0b6c42y9qbrvxg7gdam0qmif62mr8qa0ylidl";
-    })
-  ];
-
   postPatch = ''
     substituteInPlace shared/com.github.hluk.copyq.desktop.in \
       --replace copyq "$out/bin/copyq"
diff --git a/pkgs/applications/version-management/mercurial/default.nix b/pkgs/applications/version-management/mercurial/default.nix
index eea3e7afb774..8320491758ea 100644
--- a/pkgs/applications/version-management/mercurial/default.nix
+++ b/pkgs/applications/version-management/mercurial/default.nix
@@ -6,6 +6,12 @@
 , guiSupport ? fullBuild, tk
 , highlightSupport ? fullBuild
 , ApplicationServices
+# test dependencies
+, unzip
+, which
+, sqlite
+, git
+, gnupg
 }:
 
 let
@@ -13,11 +19,11 @@ let
 
   self = python3Packages.buildPythonApplication rec {
     pname = "mercurial";
-    version = "5.9.3";
+    version = "6.0.1";
 
     src = fetchurl {
       url = "https://mercurial-scm.org/release/mercurial-${version}.tar.gz";
-      sha256 = "sha256-O0P2iXetD6dap/HlyPCoO6k1YhqyOWEpq7SY5W0b4I4=";
+      sha256 = "sha256-Bf0LSAOJyWVH9abHaekO4A8dE/esDUZeQKOBxs86VuI=";
     };
 
     format = "other";
@@ -27,11 +33,20 @@ let
     cargoDeps = if rustSupport then rustPlatform.fetchCargoTarball {
       inherit src;
       name = "${pname}-${version}";
-      sha256 = "sha256:1d911jaawdrcv2mdhlp2ylr10791zj7dhb69aiw5yy7vn7gry82n";
+      sha256 = "sha256-leyLb6RqntiuEhmJSUkZRUuO8ah0BZI5OhKkGbWRjxs=";
       sourceRoot = "${pname}-${version}/rust";
     } else null;
     cargoRoot = if rustSupport then "rust" else null;
 
+    postPatch = ''
+      patchShebangs .
+
+      for f in **/*.{py,c,t}; do
+        # not only used in shebangs
+        substituteAllInPlace "$f" '/bin/sh' '${stdenv.shell}'
+      done
+    '';
+
     propagatedBuildInputs = lib.optional re2Support fb-re2
       ++ lib.optional gitSupport pygit2
       ++ lib.optional highlightSupport pygments;
@@ -47,6 +62,26 @@ let
     makeFlags = [ "PREFIX=$(out)" ]
       ++ lib.optional rustSupport "PURE=--rust";
 
+    doCheck = stdenv.isLinux;  # tests seem unstable on Darwin
+    checkInputs = [
+      unzip
+      which
+      sqlite
+      git
+      gnupg
+    ];
+    checkPhase = ''
+      cat << EOF > tests/blacklists/nix
+      # tests enforcing "/usr/bin/env" shebangs, which are patched for nix
+      test-run-tests.t
+      test-check-shbang.t
+      EOF
+
+      # extended timeout necessary for tests to pass on the busy CI workers
+      export HGTESTFLAGS="--blacklist blacklists/nix --timeout 600"
+      make check
+    '';
+
     postInstall = (lib.optionalString guiSupport ''
       mkdir -p $out/etc/mercurial
       cp contrib/hgk $out/bin
diff --git a/pkgs/desktops/enlightenment/efl/default.nix b/pkgs/desktops/enlightenment/efl/default.nix
index 14d4572cf6f3..fb67cafd63a3 100644
--- a/pkgs/desktops/enlightenment/efl/default.nix
+++ b/pkgs/desktops/enlightenment/efl/default.nix
@@ -56,11 +56,11 @@
 
 stdenv.mkDerivation rec {
   pname = "efl";
-  version = "1.26.0";
+  version = "1.26.1";
 
   src = fetchurl {
     url = "http://download.enlightenment.org/rel/libs/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "0k10mwpdjn57r2kflbzpybhvwl25yqqa2i2fhx0qazyjbzjbrad4";
+    sha256 = "0hm6i1f2g4mwj726rc6na38xhys1plbv9swrlc9hrpa87mz6gac6";
   };
 
   nativeBuildInputs = [
diff --git a/pkgs/desktops/enlightenment/terminology/default.nix b/pkgs/desktops/enlightenment/terminology/default.nix
index 10b97436b911..a2e4f717f481 100644
--- a/pkgs/desktops/enlightenment/terminology/default.nix
+++ b/pkgs/desktops/enlightenment/terminology/default.nix
@@ -1,12 +1,12 @@
-{ lib, stdenv, fetchurl, meson, ninja, pkg-config, python3, efl, pcre, mesa }:
+{ lib, stdenv, fetchurl, meson, ninja, pkg-config, python3, efl }:
 
 stdenv.mkDerivation rec {
   pname = "terminology";
-  version = "1.11.0";
+  version = "1.12.1";
 
   src = fetchurl {
     url = "https://download.enlightenment.org/rel/apps/${pname}/${pname}-${version}.tar.xz";
-    sha256 = "0bbav27p1xni7kidgf3vn42bwsfrzds301k3f7c8dg7v5yyq9n2g";
+    sha256 = "1aasddf2343qj798b5s8qwif3lxj4pyjax6fa9sfi6if9icdkkpq";
   };
 
   nativeBuildInputs = [
@@ -18,12 +18,6 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     efl
-    pcre
-    mesa
-  ];
-
-  mesonFlags = [
-    "-D edje-cc=${efl}/bin/edje_cc"
   ];
 
   postPatch = ''
diff --git a/pkgs/development/libraries/wolfssl/default.nix b/pkgs/development/libraries/wolfssl/default.nix
index 619f41eb33f2..d2735f34b7f0 100644
--- a/pkgs/development/libraries/wolfssl/default.nix
+++ b/pkgs/development/libraries/wolfssl/default.nix
@@ -6,13 +6,13 @@
 
 stdenv.mkDerivation rec {
   pname = "wolfssl";
-  version = "5.1.0";
+  version = "5.1.1";
 
   src = fetchFromGitHub {
     owner = "wolfSSL";
     repo = "wolfssl";
     rev = "v${version}-stable";
-    sha256 = "sha256-PkuYXDL04LbUiY+O/4EilZn2+hTbwbRXPDE3B5d/4pQ=";
+    sha256 = "sha256-/noS5cn8lllWoGyZ9QyjRmdiR6LXzfT4lYGEt+0+Bdw=";
   };
 
   # Almost same as Debian but for now using --enable-all --enable-reproducible-build instead of --enable-distro to ensure options.h gets installed
diff --git a/pkgs/development/ocaml-modules/uunf/default.nix b/pkgs/development/ocaml-modules/uunf/default.nix
index b71442a6a8b3..073e6865fcdd 100644
--- a/pkgs/development/ocaml-modules/uunf/default.nix
+++ b/pkgs/development/ocaml-modules/uunf/default.nix
@@ -22,6 +22,8 @@ stdenv.mkDerivation {
 
   propagatedBuildInputs = [ uchar ];
 
+  prePatch = lib.optionalString stdenv.isAarch64 "ulimit -s 16384";
+
   inherit (topkg) buildPhase installPhase;
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/filebrowser_safe/default.nix b/pkgs/development/python-modules/filebrowser_safe/default.nix
index d571f76f9227..28798dd838e3 100644
--- a/pkgs/development/python-modules/filebrowser_safe/default.nix
+++ b/pkgs/development/python-modules/filebrowser_safe/default.nix
@@ -2,18 +2,25 @@
 , buildPythonPackage
 , fetchPypi
 , django
+, pythonOlder
 }:
 
 buildPythonPackage rec {
-  version = "1.1.0";
-  pname = "filebrowser_safe";
+  pname = "filebrowser-safe";
+  version = "1.1.1";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
 
   src = fetchPypi {
-    inherit pname version;
-    sha256 = "14b6e0af9697f1d0f08508cc88bc8459273cd6453636cebe8504dccc80e926e4";
+    pname = "filebrowser_safe";
+    inherit version;
+    sha256 = "499c5dbd9e112dfc436cae7713b2fb664a59015021f6c9d131e3b7980aeb5c94";
   };
 
-  buildInputs = [ django ];
+  buildInputs = [
+    django
+  ];
 
   # There is no test embedded
   doCheck = false;
@@ -24,15 +31,10 @@ buildPythonPackage rec {
       filebrowser_safe was created to provide a snapshot of the
       FileBrowser asset manager for Django, to be referenced as a
       dependency for the Mezzanine CMS for Django.
-
-      At the time of filebrowser_safe's creation, FileBrowser was
-      incorrectly packaged on PyPI, and had also dropped compatibility
-      with Django 1.1 - filebrowser_safe was therefore created to
-      address these specific issues.
     '';
     homepage = "https://github.com/stephenmcd/filebrowser-safe";
     downloadPage = "https://pypi.python.org/pypi/filebrowser_safe/";
-    license = licenses.free;
+    license = licenses.bsd3;
     maintainers = with maintainers; [ prikhi ];
     platforms = platforms.unix;
   };
diff --git a/pkgs/development/python-modules/limnoria/default.nix b/pkgs/development/python-modules/limnoria/default.nix
index 8e2cb3ca366e..7a4e93f9ddd3 100644
--- a/pkgs/development/python-modules/limnoria/default.nix
+++ b/pkgs/development/python-modules/limnoria/default.nix
@@ -15,14 +15,14 @@
 
 buildPythonPackage rec {
   pname = "limnoria";
-  version = "2022.1.1";
+  version = "2022.1.1.post1";
   format = "setuptools";
 
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-tJqUsNRvSipuvOTfxJOFUCojrkRrrrzIgEYNShrTP8c=";
+    hash = "sha256-9p06yD95emBOFKtTZMVR/3ySAB24pB3QRmzVEnqeb9U=";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/parfive/default.nix b/pkgs/development/python-modules/parfive/default.nix
index 822ae2113b2a..5bb1b0443934 100644
--- a/pkgs/development/python-modules/parfive/default.nix
+++ b/pkgs/development/python-modules/parfive/default.nix
@@ -15,14 +15,14 @@
 
 buildPythonPackage rec {
   pname = "parfive";
-  version = "1.5.0";
+  version = "1.5.1";
   format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "f36128e8a93f3494ce3de8af883eeba4bd651ab228682810a46ec4b7897a84b3";
+    sha256 = "c411fd7269a49d1c72a964e97de474ec082115777b363aeed98a6595f90b8676";
   };
 
   buildInputs = [
diff --git a/pkgs/development/python-modules/pysimplegui/default.nix b/pkgs/development/python-modules/pysimplegui/default.nix
index 9542ffe1b3bb..ecc396d1b0fe 100644
--- a/pkgs/development/python-modules/pysimplegui/default.nix
+++ b/pkgs/development/python-modules/pysimplegui/default.nix
@@ -2,26 +2,34 @@
 , buildPythonPackage
 , fetchPypi
 , tkinter
+, pythonOlder
 }:
+
 buildPythonPackage rec {
-  pname = "PySimpleGUI";
-  version = "4.55.1";
+  pname = "pysimplegui";
+  version = "4.56.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
 
   src = fetchPypi {
-    inherit pname version;
-    sha256 = "sha256-nUDAoMK0w9Luk1hU5I1yT1CK5oEj9LrIByYS3Z5wfew=";
+    pname = "PySimpleGUI";
+    inherit version;
+    sha256 = "1a13a19282f92626cc6a823cbe9f4aa08aa558870f03441a1c4e8b6cef27c9d5";
   };
 
-  pythonImportsCheck = [ "PySimpleGUI" ];
-
   propagatedBuildInputs = [
     tkinter
   ];
 
+  pythonImportsCheck = [
+    "PySimpleGUI"
+  ];
+
   meta = with lib; {
-    description = "Python GUIs for Humans.";
+    description = "Python GUIs for Humans";
     homepage = "https://github.com/PySimpleGUI/PySimpleGUI";
-    license = licenses.gpl3;
+    license = licenses.lgpl3Plus;
     maintainers = with maintainers; [ lucasew ];
   };
 }
diff --git a/pkgs/development/python-modules/python-gitlab/default.nix b/pkgs/development/python-modules/python-gitlab/default.nix
index a5c40533c169..c3e35db28aa1 100644
--- a/pkgs/development/python-modules/python-gitlab/default.nix
+++ b/pkgs/development/python-modules/python-gitlab/default.nix
@@ -10,12 +10,14 @@
 
 buildPythonPackage rec {
   pname = "python-gitlab";
-  version = "2.10.1";
-  disabled = pythonOlder "3.6";
+  version = "3.0.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "7afa7d7c062fa62c173190452265a30feefb844428efc58ea5244f3b9fc0d40f";
+    sha256 = "89f82740b76820cf407cee9c43b75ca3ddb72f344f595902ee963837d7664986";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/tools/analysis/rizin/default.nix b/pkgs/development/tools/analysis/rizin/default.nix
index e632c3c3cc01..c316ef970f88 100644
--- a/pkgs/development/tools/analysis/rizin/default.nix
+++ b/pkgs/development/tools/analysis/rizin/default.nix
@@ -23,11 +23,11 @@
 
 stdenv.mkDerivation rec {
   pname = "rizin";
-  version = "0.3.1";
+  version = "0.3.2";
 
   src = fetchurl {
     url = "https://github.com/rizinorg/rizin/releases/download/v${version}/rizin-src-v${version}.tar.xz";
-    sha256 = "sha256-muS3+cR75jZl/Q5ZN1srEPg8NxVquwRMpNYcHw/Ij34=";
+    sha256 = "sha256-T65gm1tfRD7dZSL8qZKMTAbQ65Lx/ecidFc9T1b7cig=";
   };
 
   mesonFlags = [
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index dee182170220..0be7edfca52a 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7716,6 +7716,8 @@ with pkgs;
     guile = guile_1_8;
   };
 
+  mcstatus = with python3Packages; toPythonApplication mcstatus;
+
   mdbtools = callPackage ../tools/misc/mdbtools { };
 
   mdk = callPackage ../development/tools/mdk { };
@@ -25037,6 +25039,8 @@ with pkgs;
 
   elvis = callPackage ../applications/editors/elvis { };
 
+  em = callPackage ../applications/editors/em { };
+
   emacs = emacs27;
   emacs-nox = emacs27-nox;