spread: simplify build-dep install

Author: Saviq

spread/build/ubuntu/task.yaml

@@ -12,20 +12,16 @@ summary: Build Ubuntu packages
 execute: |
     cd $SPREAD_PATH
 
-    apt-get install --yes software-properties-common
-
     # Add Mir dev PPA for any out-of-archive packages needed
     # (Currently: a newer version of WLCS)
     add-apt-repository ppa:mir-team/dev
 
     # to get dpkg-architecture and mk-build-deps
     apt-get install \
       --yes \
-      --no-install-recommends \
       ccache \
       devscripts \
-      dpkg-dev \
-      equivs
+      dpkg-dev
 
     # set host and build environment up
     source <( dpkg-architecture --print-set --host-arch ${ARCH} )
@@ -56,18 +52,13 @@ execute: |
 
         apt-get update
         apt-get --yes install qemu-user-static binfmt-support
-
-        # Quirk for the eglexternalplatform-dev build dependency
-        sed -i 's/\(eglexternalplatform-dev\)/\1:all/' debian/control
     fi
 
     # Mark the "release" in the changelog
     debchange --release "CI release"
 
     # install dependencies
-    mk-build-deps \
-      --install \
-      --tool "apt-get --yes -o Debug::pkgProblemResolver=yes -o APT::Immediate-Configure=0"
+    apt-get build-dep --yes ./
 
     # use clang
     if [ "${CLANG}" -eq 1 ]; then