python 3.33 KB
Newer Older
Kenneth Reitz's avatar
Kenneth Reitz committed
1 2
#!/usr/bin/env bash

3
set +e
Kenneth Reitz's avatar
Kenneth Reitz committed
4
runtime-fixer runtime.txt
5 6
PYTHON_VERSION=$(cat runtime.txt)

7 8 9
# The location of the pre-compiled python binary.
VENDORED_PYTHON="${VENDOR_URL}/runtimes/$PYTHON_VERSION.tar.gz"

Kenneth Reitz's avatar
Kenneth Reitz committed
10 11 12 13 14 15 16
if [[ $PYTHON_VERSION =~ ^python-2 ]]; then
  if [[ "$PYTHON_VERSION" != "$LATEST_2" ]]; then
    puts-warn "The latest version of Python 2 is $LATEST_2 (you are using $PYTHON_VERSION, which is unsupported)."
    puts-warn "We recommend upgrading by specifying the latest version ($LATEST_2)."
    echo "       Learn More: https://devcenter.heroku.com/articles/python-runtimes"
  fi
else
17
  if [[ $PYTHON_VERSION =~ ^python-3.7 ]] && [[ "$PYTHON_VERSION" != "$LATEST_37" ]]; then
18
    puts-warn "The latest version of Python 3.7 is $LATEST_37 (you are using $PYTHON_VERSION, which is unsupported)."
19
    puts-warn "We recommend upgrading by specifying the latest version ($LATEST_37)."
Kenneth Reitz's avatar
Kenneth Reitz committed
20
    echo "       Learn More: https://devcenter.heroku.com/articles/python-runtimes"
21 22
  else
    if [[ "$PYTHON_VERSION" != "$LATEST_36" ]]; then
23
      puts-warn "The latest version of Python 3.6 is $LATEST_36 (you are using $PYTHON_VERSION, which is unsupported)."
24 25 26
      puts-warn "We recommend upgrading by specifying the latest version ($LATEST_36)."
      echo "       Learn More: https://devcenter.heroku.com/articles/python-runtimes"
    fi
Kenneth Reitz's avatar
Kenneth Reitz committed
27 28 29
  fi
fi

30 31
if [[ "$STACK" != "$CACHED_PYTHON_STACK" ]]; then
    puts-step "Stack has changed from $CACHED_PYTHON_STACK to $STACK, clearing cache"
32 33 34 35 36 37 38 39 40
    rm -fr .heroku/python-stack .heroku/python-version .heroku/python .heroku/vendor .heroku/python .heroku/python-sqlite3-version
fi

# need to clear the cache for first time installing SQLite3,
# since the version is changing and could lead to runtime errors
# with compiled extensions.
if [ -d .heroku/python ] && [ ! -f .heroku/python-sqlite3-version ] && python_sqlite3_check "$PYTHON_VERSION"; then
  puts-step "Need to update SQLite3, clearing cache"
  rm -fr .heroku/python-stack .heroku/python-version .heroku/python .heroku/vendor
41 42
fi

43
if [ -f .heroku/python-version ]; then
Kenneth Reitz's avatar
Kenneth Reitz committed
44
  if [ ! "$(cat .heroku/python-version)" = "$PYTHON_VERSION" ]; then
Kenneth Reitz's avatar
v100  
Kenneth Reitz committed
45 46
      puts-step "Found $(cat .heroku/python-version), removing"
      rm -fr .heroku/python
47 48 49 50 51 52
  else
    SKIP_INSTALL=1
  fi
fi

if [ ! "$SKIP_INSTALL" ]; then
Kenneth Reitz's avatar
Kenneth Reitz committed
53
    puts-step "Installing $PYTHON_VERSION"
54 55 56 57

    # Prepare destination directory.
    mkdir -p .heroku/python

Kenneth Reitz's avatar
Kenneth Reitz committed
58 59
    mcount "version.python.$PYTHON_VERSION"

60
    if ! curl "${VENDORED_PYTHON}" -s | tar zxv -C .heroku/python &> /dev/null; then
61 62 63 64 65 66
      puts-warn "Requested runtime ($PYTHON_VERSION) is not available for this stack ($STACK)."
      puts-warn "Aborting.  More info: https://devcenter.heroku.com/articles/python-support"
      exit 1
    fi

  # Record for future reference.
Kenneth Reitz's avatar
Kenneth Reitz committed
67 68
  echo "$PYTHON_VERSION" > .heroku/python-version
  echo "$STACK" > .heroku/python-stack
69 70 71 72 73 74
  FRESH_PYTHON=true

  hash -r
fi

# If Pip isn't up to date:
Kenneth Reitz's avatar
Kenneth Reitz committed
75
if [ "$FRESH_PYTHON" ] || [[ ! $(pip --version) == *$PIP_UPDATE* ]]; then
76

Kenneth Reitz's avatar
Kenneth Reitz committed
77 78
  puts-step "Installing pip"

Kenneth Reitz's avatar
Kenneth Reitz committed
79
  # Remove old installations.
Kenneth Reitz's avatar
Kenneth Reitz committed
80 81
  rm -fr /app/.heroku/python/lib/python*/site-packages/pip-*
  rm -fr /app/.heroku/python/lib/python*/site-packages/setuptools-*
Kenneth Reitz's avatar
Kenneth Reitz committed
82

Kenneth Reitz's avatar
Kenneth Reitz committed
83
  /app/.heroku/python/bin/python "$ROOT_DIR/vendor/get-pip.py" pip=="$PIP_UPDATE" &> /dev/null
84
  /app/.heroku/python/bin/pip install "$ROOT_DIR/vendor/setuptools-39.0.1-py2.py3-none-any.whl" &> /dev/null
Kenneth Reitz's avatar
Kenneth Reitz committed
85

86 87 88
fi

set -e
89
hash -r