diff --git a/bin/build.sh b/bin/build.sh
index 76ff90e..4260199 100755
--- a/bin/build.sh
+++ b/bin/build.sh
@@ -120,7 +120,7 @@ source ${BASEDIR}/lib/03-release_me.func.sh
 source ${BASEDIR}/lib/04-facehugger.func.sh
 source ${BASEDIR}/lib/05-chroot_wrapper.func.sh
 source ${BASEDIR}/lib/06-jenny_craig.func.sh
-if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" ]];
+if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" || "${HOST_DIST}" == "SUSE" ]];
   source ${BASEDIR}/lib/07-centos_is_stupid.func.sh
 fi
 source ${BASEDIR}/lib/08-will_it_blend.func.sh
@@ -154,7 +154,7 @@ fi
 if [[ ${1} == "update" ]];
 then
   mentos
-  if [[ "${HOST_DIST}" == "CentOS" || "${HOST_DIST}" == "RHEL" ]];
+  if [[ -f "${CHROOTDIR}root.x86_64/root/chroot" || -f "${CHROOTDIR}root.i686/root/chroot" ]];
     centos_is_stupid
   fi
   will_it_blend 32
@@ -176,15 +176,21 @@ if [[ ${1} == "build" || -z ${1} || ${1} == "all" ]];
 then
   if [[ "${MULTIARCH}" == "y" ]];
   then
-    centos_is_stupid
+    if [[ -f "${CHROOTDIR}root.x86_64/root/chroot" || -f "${CHROOTDIR}root.i686/root/chroot" ]];
+      centos_is_stupid
+    fi
     will_it_blend 64
     will_it_blend 32
     yo_dj any
   else
-    centos_is_stupid
+    if [[ -f "${CHROOTDIR}root.x86_64/root/chroot" || -f "${CHROOTDIR}root.i686/root/chroot" ]];
+      centos_is_stupid
+    fi
     will_it_blend 64
     yo_dj 64
-    centos_is_stupid
+    if [[ -f "${CHROOTDIR}root.x86_64/root/chroot" || -f "${CHROOTDIR}root.i686/root/chroot" ]];
+      centos_is_stupid
+    fi
     will_it_blend 32
     yo_dj 32
   fi
diff --git a/lib/00-depcheck.func.sh b/lib/00-depcheck.func.sh
index 9f503af..ca57d95 100755
--- a/lib/00-depcheck.func.sh
+++ b/lib/00-depcheck.func.sh
@@ -13,6 +13,7 @@ function so_check_me_out {
    fi  
  fi
 
+ set +e
  if [[ -z "${HOST_DIST}" ]]; 
  then
    for dist_profile in $(find "${BASEDIR}"/lib/prereqs -type f -name 'meta');
@@ -20,7 +21,7 @@ function so_check_me_out {
      source ${dist_profile}
      if [[ "${SUPPORTED}" != "yes" ]];
      then
-       continue 
+       continue
      fi
      eval "${CHECK_METHOD}" > /dev/null 2>&1
      if [[ "${?}" == "0" ]]; 
@@ -30,6 +31,7 @@ function so_check_me_out {
        break 2
      fi
    done
+   set -e
  fi
 
  # Sanity is important.
@@ -40,7 +42,8 @@ function so_check_me_out {
  fi
 
  ## TWEAKS GO HERE. ##
- # stupid gentoo. good riddance.
+ #  stupid gentoo. good riddance.
+ set +e
  if [[ "${HOST_DIST}" == "Gentoo" ]];
  then
    grep -q 'app-arch/lzma' /etc/portage/package.accept_keywords
@@ -49,6 +52,21 @@ function so_check_me_out {
      echo 'app-arch/lzma' >> /etc/portage/package.accept_keywords
    fi
  fi
+ set -e
+
+ # For some reason, I can't get "yes y | " to parse correctly with eval. And Arch isn't smart enough
+ # to figuure out that if I enable the multilib repos, *I wat multilib gcc*. Fuck it. We'll just remove it first.
+ if [[ "${HOST_DIST}" == "Arch" || "${HOST_DIST}" == "Antergos" || "${HOST_DIST}" == "Manjaro" ]];
+ then
+   for pkg_override in gcc gcc-libs;
+   do
+     pacman -Q ${pkg_override} >> "${LOGFILE}.${FUNCNAME}" 2>&1
+     if [[ "${?}" == "0" ]];
+     then
+       pacman -R --noconfirm ${pkg_override} >> "${LOGFILE}.${FUNCNAME}" 2>&1
+     fi
+   done
+ fi
 
  # So we've validated the distro. Here, check for packages and install if necessary. maybe use an array, but it'd be better to soft-fail if one of the packages is missing.
 
@@ -85,11 +103,13 @@ function so_check_me_out {
        echo "This usually means you aren't connected to the Internet or your package repositories"
        echo "are not configured correctly. Review the list of packages in ${PKGLIST} and ensure"
        echo "they are all available to be installed."
+       exit 1
      fi
    fi
  done < ${PKGLIST}
 
  set -e
+ rm -f "${LOCKFILE}"
 }
 
 so_check_me_out
diff --git a/lib/07-centos_is_stupid.func.sh b/lib/07-centos_is_stupid.func.sh
index 944713f..19ca659 100644
--- a/lib/07-centos_is_stupid.func.sh
+++ b/lib/07-centos_is_stupid.func.sh
@@ -22,6 +22,7 @@ function centos_is_stupid {
       echo
     fi
     # 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.
+    # This also lets us cut out the crufty version check and replace it with the one above.
   fi
 
   # UGH. And you know what? Fuck SUSE too.
@@ -38,7 +39,60 @@ function centos_is_stupid {
       curl -sLo /tmp/${XORRISO_RPM} "http://download.opensuse.org/repositories/home:/Knolleblau/openSUSE_${SUSE_VER}/x86_64/${XORRISO_RPM}"
       zypper install --no-confirm -l /tmp/${XORRISO_RPM} >> "${LOGFILE}.${FUNCNAME}" 2>&1
       echo "Done."
+ 
       echo
     fi
   fi
+ 
+  # And a double fuck-you to SLED/SLES.
+  if [[ "${HOST_DIST}" == "SUSE" ]];
+  then
+    source /etc/os-release
+    source ${BASEDIR}/lib/prereqs/SUSE/meta
+    SUSE_VER="${VERSION_ID}"
+    SUSE_REL="${ID}"
+    SDK_PKGS=(binutils-devel git xz-devel xz-devel-32bit zlib-devel zlib-devel-32bit)
+    
+    if [[ "${PRE_RUN}" != 'none' ]];
+    then
+      echo "Now updating your local package cache..."
+      set +e
+      eval "${PRE_RUN}" >> "${LOGFILE}.${FUNCNAME}" 2>&1
+      if [[ "${?}" != "0" ]];
+      then
+        echo "ERROR: Syncing your local package cache via ${PRE_RUN} command failed."
+        echo "Please ensure you are connected to the Internet/have repositories configured correctly."
+        exit 1
+      fi
+    fi
+
+    zypper search binutils-devel | egrep -q '^[[:space:]]*|[[:space:]]*binutils-devel[[:space:]]*'
+    if [[ "${?}" != "0" ]];
+    then
+      echo
+      echo "In order to install some of the necessary packages on the host, you will need to add the SLE SDK repository."
+      echo "It can be downloaded by visiting http://download.suse.com/ and search for 'SUSE Linux Enterprise Software Development Kit'"
+      echo "(or add it to your subscriptions)."
+      echo "See https://www.suse.com/documentation/${SUSE_REL}-${SUSE_VER}/book_sle_deployment/data/sec_add-ons_sdk.html for more information."
+      exit 1
+    else
+      for pkgname in "${SDK_PKGS[@]}";
+      do
+        eval "${PKG_CHK}" >> "${LOGFILE}.${FUNCNAME}" 2>&1
+        if [[ "${?}" != "0" ]];
+        then
+          echo "Installing ${pkgname}..."
+          eval "${PKG_MGR}" >> "${LOGFILE}.${FUNCNAME}" 2>&1
+          if [[ "${?}" != "0" ]];
+          then
+            echo "ERROR: ${pkgname} was not found to be installed and we can't install it."
+            echo "This usually means you aren't connected to the Internet or your package repositories"
+            echo "are not configured correctly. Review the list of packages in ${PKGLIST} and ensure"
+            echo "they are all available to be installed."
+          fi
+        fi
+      done
+   fi
+ fi
+
 }
diff --git a/lib/prereqs/Arch/pkgs b/lib/prereqs/Arch/pkgs
index faeb1db..868374b 100644
--- a/lib/prereqs/Arch/pkgs
+++ b/lib/prereqs/Arch/pkgs
@@ -14,6 +14,5 @@ rsync
 sed
 squashfs-tools
 syslinux
-xorriso
 xz
 zlib
diff --git a/lib/prereqs/Fedora/pkgs b/lib/prereqs/Fedora/pkgs
index ab94131..e79d042 100644
--- a/lib/prereqs/Fedora/pkgs
+++ b/lib/prereqs/Fedora/pkgs
@@ -14,6 +14,7 @@ sed
 squashfs-tools
 syslinux
 syslinux-devel
+tar
 xorriso
 xz
 xz-devel
diff --git a/lib/prereqs/SUSE/meta b/lib/prereqs/SUSE/meta
index 6c2ae1b..56a6331 100644
--- a/lib/prereqs/SUSE/meta
+++ b/lib/prereqs/SUSE/meta
@@ -6,3 +6,4 @@ PKG_MGR='zypper install --no-confirm -l ${pkgname}'
 PRE_RUN='zypper refresh'
 PKG_CHK='rpm -q ${pkgname} | egrep "^${pkgname}-[0-9]"'
 URL='https://www.suse.com/'
+# See the centos_is_stupid function. we do some tweaks there since -devel pkgs require the SDK on SLES/SLED.
diff --git a/lib/prereqs/openSUSE/pkgs b/lib/prereqs/openSUSE/pkgs
index 534b61e..49b7539 100644
--- a/lib/prereqs/openSUSE/pkgs
+++ b/lib/prereqs/openSUSE/pkgs
@@ -1,5 +1,4 @@
 binutils
-binutils-devel
 curl
 gcc
 gcc-32bit
@@ -16,7 +15,3 @@ sed
 squashfs
 syslinux
 xz
-xz-devel
-xz-devel-32bit
-zlib-devel
-zlib-devel-32bit