Add freeze file to avoid text 1.2.4.0 duplicate instances (#347)

* Add freeze file to avoid text 1.2.4.0 which conflicts with th-instances-lift (transitive dependencies)

* Don't reset freeze file in travis build

Author: oliver-batchelor

.travis.yml

@@ -118,41 +118,42 @@ install:
     echo "repository hackage.haskell.org"               >> $CABALHOME/config
     echo "  url: http://hackage.haskell.org/"           >> $CABALHOME/config
   - cat $CABALHOME/config
-  - rm -fv cabal.project cabal.project.local cabal.project.freeze
+  - rm -fv cabal.project cabal.project.local
   - travis_retry ${CABAL} v2-update -v
   - if $GHCJS ; then (cd /tmp && ${CABAL} v2-install -w ghc-8.6.5 happy) ; fi
   # Generate cabal.project
-  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - rm -rf cabal.project cabal.project.local
   - touch cabal.project
   - |
     echo "packages: ." >> cabal.project
   - cat cabal.project || true
   - cat cabal.project.local || true
   - if [ -f "./configure.ac" ]; then (cd "." && autoreconf -i); fi
-  - ${CABAL} v2-freeze $WITHCOMPILER ${TEST} ${BENCH} | color_cabal_output
+    #  - ${CABAL} v2-freeze $WITHCOMPILER ${TEST} ${BENCH} | color_cabal_output
   - ${CABAL} v2-configure $WITHCOMPILER ${TEST} ${BENCH} | color_cabal_output
   - "cat cabal.project.freeze | sed -E 's/^(constraints: *| *)//' | sed 's/any.//'"
-  - rm  cabal.project.freeze || true
   - rm cabal.project.local || true
 script:
   - DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
   # Packaging...
   - ${CABAL} v2-sdist all | color_cabal_output
   # Unpacking...
   - mv dist-newstyle/sdist/*.tar.gz ${DISTDIR}/
+  - cp cabal.project.freeze ${DISTDIR}/ || true
   - cd ${DISTDIR} || false
   - find . -maxdepth 1 -type f -name '*.tar.gz' -exec tar -xvf '{}' \;
   - find . -maxdepth 1 -type f -name '*.tar.gz' -exec rm       '{}' \;
   - PKGDIR_reflex="$(find . -maxdepth 1 -type d -regex '.*/reflex-[0-9.]*')"
   # Generate cabal.project
-  - rm -rf cabal.project cabal.project.local cabal.project.freeze
+  - rm -rf cabal.project cabal.project.local 
   - touch cabal.project
   - |
     echo "packages: ${PKGDIR_reflex}" >> cabal.project
   - |
   - cat cabal.project || true
   - cat cabal.project.local || true
   - rm cabal.project.local || true
+  - cat cabal.project.freeze || true
   # Building...
   # this builds all libraries and executables (without tests/benchmarks)
   - ${CABAL} v2-build $WITHCOMPILER --disable-tests --disable-benchmarks all | color_cabal_output

cabal.project.freeze

@@ -0,0 +1 @@
+constraints: any.text < 1.2.4.0