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
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
from __future__ import annotations
import contextlib
import functools
import os.path
import shutil
import sys
import tempfile
import urllib.request
from collections.abc import Generator
from collections.abc import Sequence
import pre_commit.constants as C
from pre_commit import lang_base
from pre_commit import parse_shebang
from pre_commit.envcontext import envcontext
from pre_commit.envcontext import PatchesT
from pre_commit.envcontext import Var
from pre_commit.prefix import Prefix
from pre_commit.util import cmd_output_b
from pre_commit.util import make_executable
from pre_commit.util import win_exe
ENVIRONMENT_DIR = 'rustenv'
health_check = lang_base.basic_health_check
run_hook = lang_base.basic_run_hook
@functools.lru_cache(maxsize=1)
def get_default_version() -> str:
# If rust is already installed, we can save a bunch of setup time by
# using the installed version.
#
# Just detecting the executable does not suffice, because if rustup is
# installed but no toolchain is available, then `cargo` exists but
# cannot be used without installing a toolchain first.
if cmd_output_b('cargo', '--version', check=False, cwd='/')[0] == 0:
return 'system'
else:
return C.DEFAULT
def _rust_toolchain(language_version: str) -> str:
"""Transform the language version into a rust toolchain version."""
if language_version == C.DEFAULT:
return 'stable'
else:
return language_version
def get_env_patch(target_dir: str, version: str) -> PatchesT:
return (
('PATH', (os.path.join(target_dir, 'bin'), os.pathsep, Var('PATH'))),
# Only set RUSTUP_TOOLCHAIN if we don't want use the system's default
# toolchain
*(
(('RUSTUP_TOOLCHAIN', _rust_toolchain(version)),)
if version != 'system' else ()
),
)
@contextlib.contextmanager
def in_env(prefix: Prefix, version: str) -> Generator[None]:
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
with envcontext(get_env_patch(envdir, version)):
yield
def _add_dependencies(
prefix: Prefix,
additional_dependencies: set[str],
) -> None:
crates = []
for dep in additional_dependencies:
name, _, spec = dep.partition(':')
crate = f'{name}@{spec or "*"}'
crates.append(crate)
lang_base.setup_cmd(prefix, ('cargo', 'add', *crates))
def install_rust_with_toolchain(toolchain: str, envdir: str) -> None:
with tempfile.TemporaryDirectory() as rustup_dir:
with envcontext((('CARGO_HOME', envdir), ('RUSTUP_HOME', rustup_dir))):
# acquire `rustup` if not present
if parse_shebang.find_executable('rustup') is None:
# We did not detect rustup and need to download it first.
if sys.platform == 'win32': # pragma: win32 cover
url = 'https://win.rustup.rs/x86_64'
else: # pragma: win32 no cover
url = 'https://sh.rustup.rs'
resp = urllib.request.urlopen(url)
rustup_init = os.path.join(rustup_dir, win_exe('rustup-init'))
with open(rustup_init, 'wb') as f:
shutil.copyfileobj(resp, f)
make_executable(rustup_init)
# install rustup into `$CARGO_HOME/bin`
cmd_output_b(
rustup_init, '-y', '--quiet', '--no-modify-path',
'--default-toolchain', 'none',
)
cmd_output_b(
'rustup', 'toolchain', 'install', '--no-self-update',
toolchain,
)
def install_environment(
prefix: Prefix,
version: str,
additional_dependencies: Sequence[str],
) -> None:
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
# There are two cases where we might want to specify more dependencies:
# as dependencies for the library being built, and as binary packages
# to be `cargo install`'d.
#
# Unlike e.g. Python, if we just `cargo install` a library, it won't be
# used for compilation. And if we add a crate providing a binary to the
# `Cargo.toml`, the binary won't be built.
#
# Because of this, we allow specifying "cli" dependencies by prefixing
# with 'cli:'.
cli_deps = {
dep for dep in additional_dependencies if dep.startswith('cli:')
}
lib_deps = set(additional_dependencies) - cli_deps
packages_to_install: set[tuple[str, ...]] = {('--path', '.')}
for cli_dep in cli_deps:
cli_dep = cli_dep.removeprefix('cli:')
package, _, crate_version = cli_dep.partition(':')
if crate_version != '':
packages_to_install.add((package, '--version', crate_version))
else:
packages_to_install.add((package,))
with contextlib.ExitStack() as ctx:
ctx.enter_context(in_env(prefix, version))
if version != 'system':
install_rust_with_toolchain(_rust_toolchain(version), envdir)
tmpdir = ctx.enter_context(tempfile.TemporaryDirectory())
ctx.enter_context(envcontext((('RUSTUP_HOME', tmpdir),)))
if len(lib_deps) > 0:
_add_dependencies(prefix, lib_deps)
for args in packages_to_install:
cmd_output_b(
'cargo', 'install', '--bins', '--root', envdir, *args,
cwd=prefix.prefix_dir,
)
|
