forked from mc68-net/r8format
-
Notifications
You must be signed in to change notification settings - Fork 0
/
pactivate
140 lines (128 loc) · 5.9 KB
/
pactivate
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
# pactivate version 0.5.2 https://github.com/cynic-net/pactivate
[ -n "$BASH_VERSION" ] || { echo 1>&2 "source (.) this with Bash."; exit 9; }
# https://stackoverflow.com/a/28776166/107294
(return 0 2>/dev/null) \
|| { echo 1>&2 "source (.) pactivate with Bash."; exit 9; }
__pa_cleanup() {
unset __pa_cleanup __pa_echo \
__pa_builddir __pa_quiet __pa_python __pa_python_deref __pa_pyver \
__pa_bootdir __pa_basedir __pa_requirements
}
__pa_echo() { [[ -n $__pa_quiet ]] || echo "$@"; }
__pa_basedir=$(cd "$(dirname "$BASH_SOURCE")" && pwd -P)
__pa_builddir=
__pa_quiet=
while [[ $# -gt 0 ]]; do case "$1" in
-b) shift; __pa_builddir="$1"; shift;;
-B) shift; __pa_basedir="$1"; shift;;
-q) shift; __pa_quiet=-q;;
*) echo 1>&2 "pactivate: unknown argument: $1"; __pa_cleanup; return 2;;
esac; done;
if [[ -e $__pa_basedir/.python || -L $__pa_basedir/.python ]]; then
# Even if it's a dangling link (-e fails) we use it so that the
# user sees the error.
__pa_python=$__pa_basedir/.python
else
# We test `py` only in Windows/MINGW because the Unix `py` program
# (from the pythonpy package) is a different thing we never want to use.
for __pa_python in ${MSYSTEM:+py} python3 python PYTHON_NOT_FOUND; do
"$__pa_python" --version >/dev/null 2>&1 && break
done
fi
"$__pa_python" --version >/dev/null 2>&1 || {
[[ -L $__pa_python ]] \
&& echo "$__pa_python -> $(readlink "$__pa_python")"
$__pa_python --version || true # Display the suppressed error message
echo 1>&2 "pactivate: bad python interpreter"
__pa_cleanup; return 3
}
# $__pa_pyver is empty for "modern" versions of Python (i.e., those that
# can use the current get-pip.py, 3.7 and above) and otherwise is the
# major.minor revision number, suitable for use in the URL to download
# an alternate version of get-pip.py.
__pa_pyver=$("$__pa_python" -c '
# Reminder: this script must be compatible with Python 2 syntax.
import sys
M, m = sys.version_info[0], sys.version_info[1] # Major, minor
if (M < 3 or (M == 3 and m < 7)):
print("{}.{}".format(M, m))
')
__pa_requirements="$__pa_basedir/requirements.txt"
[[ -z $__pa_builddir ]] && __pa_builddir=$(cd "$__pa_basedir" && pwd -P)/.build
__pa_bootdir="$__pa_builddir/bootstrap/pactivate${__pa_pyver}"
mkdir -p "$__pa_bootdir" # also ensures that $__pa_builddir exists
# Unlike virtualenv, pip -t does not change the bin/ directory to
# Scripts/ on Windows, so we can hardcode our bootstrap/bin/pip path.
[[ -x $__pa_bootdir/bin/pip ]] || {
echo "----- Installing bootstrap pip (ver=${__pa_pyver:-latest})"
# Debian-based systems do not incude distutils in the standard
# python3 package; check that it's available and, if not, print a
# more informative message than the ModuleNotFoundError.
"$__pa_python" -c '
import sys
M, m = sys.version_info[0], sys.version_info[1] # Major, minor
if (M < 3 or (M == 3 and m < 11)): import distutils.cmd # deprecated ≥3.11
' || {
echo 1>&2 \
"Cannot import 'distuils.cmd'; apt-get install python3-distutils?"
return 3
}
# • get-pip.py produces spurious upgrade notices on older Python versions
# such as 3.6 or 2.7; --disable-pip-version-check suppresses these.
# • curl sometimes seems to resolve only an IPv6 for bootstrap.pypa.io;
# on failure try again forcing IPv4.
curl '-#' ${__pa_quiet:+--silent} \
"https://bootstrap.pypa.io/pip/$__pa_pyver/get-pip.py" \
| "$__pa_python" - \
$__pa_quiet -t "$__pa_bootdir" --disable-pip-version-check \
|| curl --ipv4 '-#' ${__pa_quiet:+--silent} \
"https://bootstrap.pypa.io/pip/$__pa_pyver/get-pip.py" \
| "$__pa_python" - \
$__pa_quiet -t "$__pa_bootdir" --disable-pip-version-check \
|| return $?
PYTHONPATH="$__pa_bootdir" "$__pa_bootdir/bin/pip" --version
}
[[ -d $__pa_bootdir/virtualenv/ ]] || {
echo '----- Installing bootstrap virtualenv'
# This install produces spurious "bootstrap/.../bin already exists"
# messages; --upgrade suppresses these. However, --upgrade also seems
# to entirely remove the bin/ directory, so we "re-install" pip
# (which will not re-download it) to restore bin/pip as well.
# Note that we _must_ use `python -m pip` because, on Windows due to
# file locking, pip is unable to replace itself if you run it as pip.exe.
PYTHONPATH="$__pa_bootdir" "$__pa_python" -m pip \
$__pa_quiet install --upgrade -t "$__pa_bootdir" pip virtualenv
}
[[ -d $__pa_builddir/virtualenv/ ]] || {
echo '----- Building virtualenv'
echo -n "Using $__pa_python"
if [[ -L $__pa_python ]]; then
# MacOS readlink has no -f option, so we must do this the hard
# way. Fortunately we already know that the binary exists and is
# a Python interpreter.
__pa_python_deref=$(readlink "$__pa_python")
__pa_python_deref=$(cd "$__pa_basedir" \
&& cd $(dirname "$__pa_python_deref") \
&& pwd -P)/$(basename "$__pa_python_deref")
echo " -> $__pa_python_deref"
else
__pa_python_deref="$__pa_python"
echo
fi
echo -n "Version: " && "$__pa_python" --version
PYTHONPATH="$__pa_bootdir" "$__pa_python_deref" -s -m virtualenv \
$__pa_quiet --prompt $(basename "$__pa_basedir") \
"$__pa_builddir/virtualenv/" \
&& [[ -f "$__pa_requirements" ]] \
&& "$__pa_builddir"/virtualenv/[bS]*/pip \
install $__pa_quiet -r "$__pa_requirements"
}
cmp -s $(type -p "$__pa_python") "$__pa_builddir"/virtualenv/[bS]*/python || (
echo 1>&2 "WARNING:" \
"${__pa_builddir#$__pa_basedir/}"/virtualenv/[bS]*/python \
"($("$__pa_builddir"/virtualenv/[bS]*/python --version 2>&1))" \
"is not $__pa_python" \
"($("$__pa_python" --version 2>&1))" \
)
. "$__pa_builddir"/virtualenv/[bS]*/activate
__pa_cleanup