FilesExpand file tree

 master

/

python

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

118 lines (110 loc) · 4.01 KB

 master

/

python

Copy path

Top

File metadata and controls

• Code
• Blame

118 lines (110 loc) · 4.01 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

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

#!/bin/sh

# bootstrap/python

#

# Python-finding script for all `sh` environments, including Linux, MSYS2,

# Git for Windows, and GitHub Desktop. Invokable from CLI or automation.

#

# If a python.exe installed by `python_.ps1` is present, it will be used.

# Otherwise, this script requires a system `python3` and `pip` to be provided,

# and will create a standard virtualenv in which to install `requirements.txt`.

set -e

# Convenience variables

Bootstrap="$(dirname "$0")"

Sdk="$(dirname "$Bootstrap")"

Cache="$Bootstrap/.cache"

if [ "$TG_BOOTSTRAP_CACHE" ]; then

Cache="$TG_BOOTSTRAP_CACHE"

fi

OldPWD="$PWD"

cd "$Bootstrap/../.."

. ./dependencies.sh # sets PYTHON_VERSION

cd "$OldPWD"

PythonVersion="$PYTHON_VERSION"

PythonDir="$Cache/python-$PythonVersion"

PythonExe="$PythonDir/python.exe"

Log="$Cache/last-command.log"

# If a portable Python for Windows is not present, search on $PATH.

if [ "$(uname)" = "Linux" ] || [ ! -f "$PythonExe" ]; then

# Strip the "App Execution Aliases" from $PATH. Even if the user installed

# Python using the Windows Store on purpose, these aliases always generate

# "Permission denied" errors when sh.exe tries to invoke them.

PATH=$(echo "$PATH" | tr ":" "\n" | grep -v "AppData/Local/Microsoft/WindowsApps" | tr "\n" ":")

# Try to find a Python executable.

if command -v python3 >/dev/null 2>&1; then

PythonExe=python3

elif command -v python >/dev/null 2>&1; then

PythonExe=python

elif command -v py >/dev/null 2>&1; then

PythonExe="py -3"

else

echo

if command -v apt-get >/dev/null 2>&1; then

echo "Please install Python using your system's package manager:"

echo " sudo apt-get install python3 python3-pip"

elif [ "$(uname -o)" = "Msys" ]; then

echo "Please run tools/bootstrap/python.bat instead of tools/bootstrap/python once to"

echo "install Python automatically, or install it from https://www.python.org/downloads/"

# TODO: give MSYS pacman advice?

elif command -v pacman >/dev/null 2>&1; then

echo "Please install Python using your system's package manager:"

echo " sudo pacman -S python python-pip"

else

echo "Please install Python from https://www.python.org/downloads/ or using your system's package manager."

fi

echo

exit 1

fi

# Create a venv and activate it

PythonDir="$Cache/venv"

if [ ! -d "$PythonDir" ]; then

echo "Creating virtualenv..."

"$PythonExe" -m venv "$PythonDir"

fi

if [ -f "$PythonDir/bin/python" ]; then

PythonExe="$PythonDir/bin/python"

elif [ -f "$PythonDir/scripts/python3.exe" ]; then

PythonExe="$PythonDir/scripts/python3.exe";

else

echo "bootstrap/python failed to find the python executable inside its virtualenv"

exit 1

fi

fi

# Use pip to install our requirements

if [ ! -f "$PythonDir/requirements.txt" ] || [ "$(b2sum < "$Sdk/requirements.txt")" != "$(b2sum < "$PythonDir/requirements.txt")" ]; then

echo "Updating dependencies..."

"$PythonExe" -m pip install -U wheel

"$PythonExe" -m pip install -U pip -r "$Sdk/requirements.txt"

cp "$Sdk/requirements.txt" "$PythonDir/requirements.txt"

echo "---"

fi

# Verify version and deduce the path separator

PythonMajor=${PythonVersion%%.*}

PythonMinor=${PythonVersion#*.}

PythonMinor=${PythonMinor%.*}

PATHSEP=$("$PythonExe" - "$PythonMajor" "$PythonMinor" <<'EOF'

import sys, os

if sys.version_info.major != int(sys.argv[1]) or sys.version_info.minor < int(sys.argv[2]):

print("Error: Python ", sys.argv[1], ".", sys.argv[2], " or later is required, but you have:\n", sys.version, sep="", file=sys.stderr)

exit(1)

print(os.pathsep)

EOF

)

# Cheap shell function if tee.exe is not available

if ! command -v tee >/dev/null 2>&1; then

tee() {

# Fudge: assume $1 is always "-a"

while read -r line; do

echo "$line" >> "$2"

echo "$line"

done

}

fi

# Invoke python with all command-line arguments

export PYTHONPATH="$Sdk$PATHSEP${PYTHONPATH:-}"

mkdir -p "$Cache"

printf '%s\n' "$PythonExe" "$@" > "$Log"

printf -- '---\n' >> "$Log"

exec 4>&1

exitstatus=$({ { set +e; "$PythonExe" -u "$@" 2>&1 3>&-; printf %s $? >&3; } 4>&- | tee -a "$Log" 1>&4; } 3>&1)

exec 4>&-

exit "$exitstatus"