diff --git a/bin/build.sh b/bin/build.sh
index 40b36fd..76ff90e 100755
--- a/bin/build.sh
+++ b/bin/build.sh
@@ -74,7 +74,7 @@ do
  fi
 done
 
-source ${BASEDOR/}lib/00-depcheck.func.sh
+source ${BASEDIR}/lib/00-depcheck.func.sh
 
 if [ ! -f "./BUILDNO" ];
 then
@@ -114,13 +114,15 @@ EOF
 ## FUNCTIONS ##
 
 #source ${BASEDIR}/lib/00-depcheck.func.sh ## this should be called like, VERYYYY first thing, right after sanity/safety checks and such.
-#source ${BASEDIR}/lib/01-mk.chroot.func.sh ## this is called automatically and only if no chroot exists
+source ${BASEDIR}/lib/01-mk.chroot.func.sh ## this is called automatically and only if no chroot exists
 source ${BASEDIR}/lib/02-holla_atcha_boi.func.sh
 source ${BASEDIR}/lib/03-release_me.func.sh
 source ${BASEDIR}/lib/04-facehugger.func.sh
 source ${BASEDIR}/lib/05-chroot_wrapper.func.sh
 source ${BASEDIR}/lib/06-jenny_craig.func.sh
-source ${BASEDIR}/lib/07-centos_is_stupid.func.sh
+if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" ]];
+  source ${BASEDIR}/lib/07-centos_is_stupid.func.sh
+fi
 source ${BASEDIR}/lib/08-will_it_blend.func.sh
 source ${BASEDIR}/lib/09-stuffy.func.sh
 source ${BASEDIR}/lib/10-yo_dj.func.sh
@@ -141,7 +143,9 @@ if [[ -f "${CHROOTDIR}root.x86_64/root/chroot" || -f "${CHROOTDIR}root.i686/root
 then
   chroot_wrapper 64
   chroot_wrapper 32
-  centos_is_stupid
+  if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" ]];
+    centos_is_stupid
+  fi
   will_it_blend 64
   will_it_blend 32
   yo_dj
@@ -150,7 +154,9 @@ fi
 if [[ ${1} == "update" ]];
 then
   mentos
-  centos_is_stupid
+  if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" ]];
+    centos_is_stupid
+  fi
   will_it_blend 32
   will_it_blend 64
   yo_dj
@@ -166,7 +172,7 @@ then
 fi
 
 # or are we just building?
-if [[ ${1} == "build" ]] || [ -z ${1} ] || [[ ${1} == "all" ]];
+if [[ ${1} == "build" || -z ${1} || ${1} == "all" ]];
 then
   if [[ "${MULTIARCH}" == "y" ]];
   then
diff --git a/lib/07-centos_is_stupid.func.sh b/lib/07-centos_is_stupid.func.sh
index 763ca9a..c26790d 100644
--- a/lib/07-centos_is_stupid.func.sh
+++ b/lib/07-centos_is_stupid.func.sh
@@ -2,72 +2,23 @@ function centos_is_stupid {
 
   FUNCNAME="centos_is_stupid"
 
-  echo "Checking for appropriate kernel version and mksquashfs version..."
-  SQFS_VER=$(mksquashfs -version 2>&1 | head -n1 | awk '{print $3}' | sed -re 's/(^[0-9]*\.[0-9]*).*$/\1/g')
-  KERN_VER=$(uname -r | cut -f1 -d"-")
-  SQUASH_OPTS="-noappend -comp xz"
-
-  set +e
-  ver_check() {
-    [ "$1" == "$2" ] && return 10
-    ver1front=`echo $1 | cut -d "." -f -1`
-    ver1back=`echo $1 | cut -d "." -f 2-`
-    ver2front=`echo $2 | cut -d "." -f -1`
-    ver2back=`echo $2 | cut -d "." -f 2-`
-     if [ "$ver1front" != "$1" ] || [ "$ver2front" != "$2" ]; then
-         [ "$ver1front" -gt "$ver2front" ] && return 11
-         [ "$ver1front" -lt "$ver2front" ] && return 9
-         [ "$ver1front" == "$1" ] || [ -z "$ver1back" ] && ver1back=0
-         [ "$ver2front" == "$2" ] || [ -z "$ver2back" ] && ver2back=0
-         ver_check "$ver1back" "$ver2back"
-         return $?
-     else
-         [ "$1" -gt "$2" ] && return 11 || return 9
-     fi
-  }    
-  ver_check ${KERN_VER} "2.6.38"
-  KERNTEST=${?}
-  ver_check ${SQFS_VER} "4.2"
-  SQFSTEST=${?}
-  if [ ${KERNTEST} -lt "10" ];
+  rpm -qa | egrep "^xorriso-[0-9]" > /dev/null 2>&1
+  if [[ "${?}" != "0" ]];
   then
-    echo "You need a newer kernel to even think about doing this. (>= 2.6.38)"
-    echo "If you're on CentOS, there are 3.x branches available via the elrepo repository."
-    echo "I recommend the 'kernel-lt' package from there."
-    echo "Bailing out."
-    exit 1
-  #elif [ ${SQFS_VER} -ge "4.2" ] && [ ${KERN_VER} -ge "2.6.38" ];
-  elif [ ${SQFSTEST} -ge "10" ] && [ ${KERNTEST} -ge "10" ];
-  then
-    #echo "Awesome; your mksquashfs (if found) is not less than v4.2."
-    SQUASH_CMD=$(which mksquashfs)
-    if [ ${?} != "0" ];
+    # Download/install the proper xorriso
+    EL_VER="$(rpm -qa coreutils | sed -re 's/^coreutils-[0-9.-]*el([0-9])*.*$/\1/g')"
+    if (("${EL_VER}" < "7"));
     then
-      echo "...Except you need to install whatever package you need to for mksquashfs."
+      echo "Wow. Your CentOS/RHEL is too old. Sorry; this is only supported on CentOS/RHEL 7 and up."
       exit 1
-    else
-     SQUASH_CMD=$(which mksquashfs)
-    fi
-  elif [ ${SQFSTEST} -lt "10" ] && [ ${KERNTEST} -ge "10" ];
-  then
-    if [ ! -f ${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs ];
-    then
-      echo "Boy howdy. We need to compile a custom version of the squashfs-tools because you aren't running a version that supports XZ. Give me a second."
-      set -e
-      mkdir -p ${SRCDIR} ${BASEDIR}/bin
-      cd ${SRCDIR}
-      #wget --quiet -O squashfs4.2.tar.gz "http://downloads.sourceforge.net/project/squashfs/squashfs/squashfs4.2/squashfs4.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fsquashfs%2Ffiles%2F&ts=1387047818&use_mirror=hivelocity"
-      curl -o squashfs4.2.tar.gz "http://downloads.sourceforge.net/project/squashfs/squashfs/squashfs4.2/squashfs4.2.tar.gz?r=http%3A%2F%2Fsourceforge.net%2Fprojects%2Fsquashfs%2Ffiles%2F&ts=1387047818&use_mirror=hivelocity" >> "${LOGFILE}.${FUNCNAME}" 2>&1
-      tar -zxf squashfs4.2.tar.gz
-      cd squashfs4.2/squashfs-tools
-      make clean
-      sed -i -e 's/^#\(XZ_SUPPORT\)/\1/g' Makefile
-      make
-      SQUASH_CMD="${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs"
-    else
-      echo "Using custom-compiled mksquashfs from an earlier run."
-      SQUASH_CMD="${SRCDIR}/squashfs4.2/squashfs-tools/mksquashfs"
     fi
+    XORRISO_RPM=$(curl -s http://pkgs.repoforge.org/xorriso/ | egrep "\"xorriso-[0-9.-]*el${EL_VER}.rf.x86_64.rpm\"" | sed -re "s/^.*\"(xorriso[0-9.-]*el${EL_VER}.rf.x86_64.rpm).*$/\1/g")
+    echo "Since you're using either CentOS or RHEL, we need to install xorriso directly from an RPM. Please wait while we do this..."
+    curl -sLo /tmp/${XORRISO_RPM} http://pkgs.repoforge.org/xorriso/${XORRISO_RPM}
+    yum -y install /tmp/${XORRISO_RPM} >> "${LOGFILE}.${FUNCNAME}" 2>&1
+    echo "Done."
+    echo
   fi
-  set -e
+  # We used to fetch and compile mksquashfs from source here, but no longer- because a new enough version is *finally* in CentOS repos as of CentOS 7.
+
 }
diff --git a/lib/prereqs/Arch/pkgs b/lib/prereqs/Arch/pkgs
index cbaf88f..dcc369e 100644
--- a/lib/prereqs/Arch/pkgs
+++ b/lib/prereqs/Arch/pkgs
@@ -6,6 +6,7 @@ git
 libisoburn
 lynx
 make
+mtools
 patch
 perl
 rsync
diff --git a/lib/prereqs/CentOS/meta b/lib/prereqs/CentOS/meta
index 660c2d6..03fb02a 100644
--- a/lib/prereqs/CentOS/meta
+++ b/lib/prereqs/CentOS/meta
@@ -5,3 +5,5 @@ PKG_MGR='yum -y install ${pkgname}'
 PRE_RUN='none'
 PKG_CHK='rpm -q ${pkgname} | egrep "^${pkgname}-[0-9]"'
 URL='http://centos.org/'
+# NOTE: we handle installing of squashfs-tools (maybe) and xorriso in centos_is_stupid function.
+# because they *suck*. Seriously. I need to install tk just to install xorriso. I mean, what?
diff --git a/lib/prereqs/Debian/pkgs b/lib/prereqs/Debian/pkgs
index 286e17b..5dccfb9 100644
--- a/lib/prereqs/Debian/pkgs
+++ b/lib/prereqs/Debian/pkgs
@@ -1,6 +1,6 @@
-git
 curl
 dosfstools
+git
 libisoburn1
 lynx
 rsync
diff --git a/lib/prereqs/Fedora/pkgs b/lib/prereqs/Fedora/pkgs
index 8af1b50..0691c4e 100644
--- a/lib/prereqs/Fedora/pkgs
+++ b/lib/prereqs/Fedora/pkgs
@@ -1,5 +1,5 @@
-git
 curl
+git
 libisofs
 lynx
 rsync
diff --git a/lib/prereqs/RHEL/pkgs b/lib/prereqs/RHEL/pkgs
index 8af1b50..3cc03ac 100644
--- a/lib/prereqs/RHEL/pkgs
+++ b/lib/prereqs/RHEL/pkgs
@@ -1,9 +1,19 @@
-git
+binutils
+binutils-devel
 curl
+gcc
+git
 libisofs
 lynx
+make
+patch
+perl
 rsync
 sed
 squashfs-tools
-xorriso
+syslinux
+syslinux-devel
 xz
+xz-devel
+zlib
+zlib-devel
diff --git a/lib/prereqs/Ubuntu/pkgs b/lib/prereqs/Ubuntu/pkgs
index 286e17b..5dccfb9 100644
--- a/lib/prereqs/Ubuntu/pkgs
+++ b/lib/prereqs/Ubuntu/pkgs
@@ -1,6 +1,6 @@
-git
 curl
 dosfstools
+git
 libisoburn1
 lynx
 rsync