Added some packages to pkgs.nix.

pkgs/pkgsets.nix

@@ -26,6 +26,7 @@ let
     indent
     iptables
     lrzip
+    lsof
     lshw
     macchanger
     mkpasswd
@@ -37,7 +38,7 @@ let
     nix-update-source
     nix-zsh-completions
     nixbang
-#    nixops
+    nixops
     nmap
     nox
     ntfs3g
@@ -48,6 +49,7 @@ let
     pciutils
     psmisc
     rfkill
+    ripgrep
     rsync
     sl
     sysvtools
@@ -91,6 +93,7 @@ let
     google-translate
     transmission
     org-plus-contrib orgit ox-gfm ox-rst
+    easy-jekyll markdown-mode impatient-mode simple-httpd htmlize
     eclim
     auto-complete
     pkgs.aspell pkgs.aspellDicts.en pkgs.aspellDicts.de
@@ -105,7 +108,7 @@ let
     pkgs.ledger
     yaml-mode
     company
-    /* C/C++ */ irony company-irony  company-irony-c-headers flycheck-irony
+    /* C/C++ */ irony company-irony  company-irony-c-headers flycheck-irony clang-format
     /* Haskell */ haskell-mode flycheck-haskell
     /* Org */ org org-ref pdf-tools org-bullets org-caldav
     /* Rust */ rust-mode flycheck-rust racer