Fix egg-links

commit cb2c57dcffe856ad547ad8fbd1907815713dc4a7
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:44:39 2017 -0500

    no files were found

commit 38f861f6c6dbb2825c6551f220e610bea619c27f
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:37:35 2017 -0500

    uninstall

commit db1db5d2a0ad364d646d378ccff62b9aa0257efd
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:36:41 2017 -0500

    pip cleanup

commit 2e16f233849f683ad9c9d00bad51c2dd5da11c18
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:35:13 2017 -0500

    uninstall

commit 078e43d2926b77a40f21026969ee930aa7ad0fee
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:31:39 2017 -0500

    fix

commit eff318eaf37161f0c496e130688b27d596b9cd7a
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:30:09 2017 -0500

    wfwef

commit d8955b452190b1b6a40049c94df564144c4607dc
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:28:30 2017 -0500

    oops

commit 0e83a0ae238bdea06ce0d184c8139b598f71745e
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:24:28 2017 -0500

    find

commit b9cb901ecb9d9075020f5c63e5faee04aade1ad7
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:23:04 2017 -0500

    don't

commit 3fd1a448e244a7c3f877ae75cd8672ef42a3f550
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:22:29 2017 -0500

    output

commit 884c6a40ee14365fccd4c9a34fb7733a833303a4
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:17:47 2017 -0500

    delete egg links

commit 9a16a8676abbd34b9ae0de3de4d52b4d358b2e35
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 11:14:18 2017 -0500

    remove egg-links

commit d45d9e977adc8ad7c5c18a27f1dfb20eb286bb5d
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:35:24 2017 -0500

    no echo

commit 5cfb64387db1c69fff57ac9afa0c996a34a4362d
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:33:58 2017 -0500

    debug

commit ac143097e9ee0a23464d16e2c6d414437046132e
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:26:27 2017 -0500

    no print 0

commit 72adfe2e4abd975f5df5350f06f93d1309ff4ed1
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:25:27 2017 -0500

    cat other one

commit e51e83ca3ec9a6710add90424f80f9bc7c3d5bf3
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:23:52 2017 -0500

    echo

commit def0231dd068fe4a854074bf42409ef373ac0977
Author: Kenneth Reitz <me@kennethreitz.org>
Date:   Mon Jan 2 10:20:31 2017 -0500

    cat the files

bin/compile

@@ -218,17 +218,14 @@ bpwatch start post_compile
   source $BIN_DIR/steps/hooks/post_compile
 bpwatch stop post_compile
 
-
 set +e
 # rewrite build dir in egg links to /app so things are found at runtime
-find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#" &> /dev/null
-find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#" &> /dev/null
+find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)#/app#" &> /dev/null
 set -e
 
 set +e
 # Support for PyPy
-find .heroku/python/lib-python/*/site-packages/  -name "*.egg-link" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#" &> /dev/null
-find .heroku/python/lib-python/*/site-packages/  -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)/#/app/#" &> /dev/null
+find .heroku/python/lib-python/*/site-packages/  -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#$(pwd)#/app#" &> /dev/null
 set -e
 
 # Store new artifacts in cache.

bin/steps/pip-install

@@ -2,13 +2,13 @@
 puts-cmd "pip install -r requirements.txt"
 
 set +e
-# rewrite any existing egg links to point to the build dir so pip does not fail with a mismatch error
-find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#/app/#$(pwd)/#" &> /dev/null
+# delete any existing egg links, to uninstall exisisting installations.
+find .heroku/python/lib/python*/site-packages/ -name "*.egg-link" -delete 2> /dev/null
 find .heroku/python/lib/python*/site-packages/ -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#/app/#/$(pwd)/#" &> /dev/null
 set -e
 
 set +e
-# Support for PyPy
+# Support for the above, for PyPy.
 find .heroku/python/lib-python/*/site-packages/ -name "*.egg-link" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#/app/#$(pwd)/#" &> /dev/null
 find .heroku/python/lib-python/*/site-packages/ -name "*.pth" -print0 2> /dev/null | xargs -r -0 -n 1 sed -i -e "s#/app/#/$(pwd)/#" &> /dev/null
 set -e

bin/utils

@@ -13,7 +13,7 @@ indent() {
 
 # Clean up pip output
 cleanup() {
-  sed -e 's/\.\.\.\+/.../g' | sed -e '/already satisfied/Id' | sed -e '/Overwriting/Id' | sed -e '/python executable/Id' | sed -e '/no previously-included files/Id'
+  sed -e 's/\.\.\.\+/.../g' | sed -e '/already satisfied/Id' | sed -e '/No files were found to uninstall/Id' | sed -e '/Overwriting/Id' | sed -e '/python executable/Id' | sed -e '/no previously-included files/Id'
 }
 
 # Buildpack Indented line.