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setup-python/src/find-python.ts at v1.2.3 · bexnoss/setup-python · GitHub
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import
*
as
os
from
'os'
;
import
*
as
path
from
'path'
;
import
*
as
semver
from
'semver'
;
let
cacheDirectory
=
process
.
env
[
'RUNNER_TOOLSDIRECTORY'
]
||
''
;
if
(
!
cacheDirectory
)
{
let
baseLocation
;
if
(
process
.
platform
===
'win32'
)
{
// On windows use the USERPROFILE env variable
baseLocation
=
process
.
env
[
'USERPROFILE'
]
||
'C:\\'
;
}
else
{
if
(
process
.
platform
===
'darwin'
)
{
baseLocation
=
'/Users'
;
}
else
{
baseLocation
=
'/home'
;
}
}
cacheDirectory
=
path
.
join
(
baseLocation
,
'actions'
,
'cache'
)
;
}
import
*
as
core
from
'@actions/core'
;
import
*
as
tc
from
'@actions/tool-cache'
;
const
IS_WINDOWS
=
process
.
platform
===
'win32'
;
// Python has "scripts" or "bin" directories where command-line tools that come with packages are installed.
// This is where pip is, along with anything that pip installs.
// There is a seperate directory for `pip install --user`.
//
// For reference, these directories are as follows:
// macOS / Linux:
// <sys.prefix>/bin (by default /usr/local/bin, but not on hosted agents -- see the `else`)
// (--user) ~/.local/bin
// Windows:
// <Python installation dir>\Scripts
// (--user) %APPDATA%\Python\PythonXY\Scripts
// See https://docs.python.org/3/library/sysconfig.html
function
binDir
(
installDir
:
string
)
:
string
{
if
(
IS_WINDOWS
)
{
return
path
.
join
(
installDir
,
'Scripts'
)
;
}
else
{
return
path
.
join
(
installDir
,
'bin'
)
;
}
}
// Note on the tool cache layout for PyPy:
// PyPy has its own versioning scheme that doesn't follow the Python versioning scheme.
// A particular version of PyPy may contain one or more versions of the Python interpreter.
// For example, PyPy 7.0 contains Python 2.7, 3.5, and 3.6-alpha.
// We only care about the Python version, so we don't use the PyPy version for the tool cache.
function
usePyPy
(
majorVersion
:
'2'
|
'3.6'
,
architecture
:
string
)
:
InstalledVersion
{
const
findPyPy
=
tc
.
find
.
bind
(
undefined
,
'PyPy'
,
majorVersion
)
;
let
installDir
:
string
|
null
=
findPyPy
(
architecture
)
;
if
(
!
installDir
&&
IS_WINDOWS
)
{
// PyPy only precompiles binaries for x86, but the architecture parameter defaults to x64.
// On our Windows virtual environments, we only install an x86 version.
// Fall back to x86.
installDir
=
findPyPy
(
'x86'
)
;
}
if
(
!
installDir
)
{
// PyPy not installed in $(Agent.ToolsDirectory)
throw
new
Error
(
`PyPy
${
majorVersion
}
not found`
)
;
}
// For PyPy, Windows uses 'bin', not 'Scripts'.
const
_binDir
=
path
.
join
(
installDir
,
'bin'
)
;
// On Linux and macOS, the Python interpreter is in 'bin'.
// On Windows, it is in the installation root.
const
pythonLocation
=
IS_WINDOWS
?
installDir
:
_binDir
;
core
.
exportVariable
(
'pythonLocation'
,
pythonLocation
)
;
core
.
addPath
(
installDir
)
;
core
.
addPath
(
_binDir
)
;
// Starting from PyPy 7.3.1, the folder that is used for pip and anything that pip installs should be "Scripts" on Windows.
if
(
IS_WINDOWS
)
{
core
.
addPath
(
path
.
join
(
installDir
,
'Scripts'
)
)
;
}
const
impl
=
'pypy'
+
majorVersion
.
toString
(
)
;
core
.
setOutput
(
'python-version'
,
impl
)
;
return
{
impl
:
impl
,
version
:
versionFromPath
(
installDir
)
}
;
}
async
function
useCpythonVersion
(
version
:
string
,
architecture
:
string
)
:
Promise
<
InstalledVersion
>
{
const
desugaredVersionSpec
=
desugarDevVersion
(
version
)
;
const
semanticVersionSpec
=
pythonVersionToSemantic
(
desugaredVersionSpec
)
;
core
.
debug
(
`Semantic version spec of
${
version
}
is
${
semanticVersionSpec
}
`
)
;
const
installDir
:
string
|
null
=
tc
.
find
(
'Python'
,
semanticVersionSpec
,
architecture
)
;
if
(
!
installDir
)
{
// Fail and list available versions
const
x86Versions
=
tc
.
findAllVersions
(
'Python'
,
'x86'
)
.
map
(
s
=>
`
${
s
}
(x86)`
)
.
join
(
os
.
EOL
)
;
const
x64Versions
=
tc
.
findAllVersions
(
'Python'
,
'x64'
)
.
map
(
s
=>
`
${
s
}
(x64)`
)
.
join
(
os
.
EOL
)
;
throw
new
Error
(
[
`Version
${
version
}
with arch
${
architecture
}
not found`
,
'Available versions:'
,
x86Versions
,
x64Versions
]
.
join
(
os
.
EOL
)
)
;
}
core
.
exportVariable
(
'pythonLocation'
,
installDir
)
;
core
.
addPath
(
installDir
)
;
core
.
addPath
(
binDir
(
installDir
)
)
;
if
(
IS_WINDOWS
)
{
// Add --user directory
// `installDir` from tool cache should look like $RUNNER_TOOL_CACHE/Python/<semantic version>/x64/
// So if `findLocalTool` succeeded above, we must have a conformant `installDir`
const
version
=
path
.
basename
(
path
.
dirname
(
installDir
)
)
;
const
major
=
semver
.
major
(
version
)
;
const
minor
=
semver
.
minor
(
version
)
;
const
userScriptsDir
=
path
.
join
(
process
.
env
[
'APPDATA'
]
||
''
,
'Python'
,
`Python
${
major
}
${
minor
}
`
,
'Scripts'
)
;
core
.
addPath
(
userScriptsDir
)
;
}
// On Linux and macOS, pip will create the --user directory and add it to PATH as needed.
const
installed
=
versionFromPath
(
installDir
)
;
core
.
setOutput
(
'python-version'
,
installed
)
;
return
{
impl
:
'CPython'
,
version
:
installed
}
;
}
/** Convert versions like `3.8-dev` to a version like `>= 3.8.0-a0`. */
function
desugarDevVersion
(
versionSpec
:
string
)
{
if
(
versionSpec
.
endsWith
(
'-dev'
)
)
{
const
versionRoot
=
versionSpec
.
slice
(
0
,
-
'-dev'
.
length
)
;
return
`>=
${
versionRoot
}
.0-a0`
;
}
else
{
return
versionSpec
;
}
}
/** Extracts python version from install path from hosted tool cache as described in README.md */
function
versionFromPath
(
installDir
:
string
)
{
const
parts
=
installDir
.
split
(
path
.
sep
)
;
const
idx
=
parts
.
findIndex
(
part
=>
part
===
'PyPy'
||
part
===
'Python'
)
;
return
parts
[
idx
+
1
]
||
''
;
}
interface
InstalledVersion
{
impl
:
string
;
version
:
string
;
}
/**
* Python's prelease versions look like `3.7.0b2`.
* This is the one part of Python versioning that does not look like semantic versioning, which specifies `3.7.0-b2`.
* If the version spec contains prerelease versions, we need to convert them to the semantic version equivalent.
*/
export
function
pythonVersionToSemantic
(
versionSpec
:
string
)
{
const
prereleaseVersion
=
/
(
\d
+
\.
\d
+
\.
\d
+
)
(
(?:
a
|
b
|
r
c
)
\d
*
)
/
g
;
return
versionSpec
.
replace
(
prereleaseVersion
,
'$1-$2'
)
;
}
export
async
function
findPythonVersion
(
version
:
string
,
architecture
:
string
)
:
Promise
<
InstalledVersion
>
{
switch
(
version
.
toUpperCase
(
)
)
{
case
'PYPY2'
:
return
usePyPy
(
'2'
,
architecture
)
;
case
'PYPY3'
:
// keep pypy3 pointing to 3.6 for backward compatibility
return
usePyPy
(
'3.6'
,
architecture
)
;
default
:
return
await
useCpythonVersion
(
version
,
architecture
)
;
}
}
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