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Fix compatibility with nix-2.3 not knowing --extra-experimental-features.
This commit is contained in:
parent
38736d6392
commit
35bd54cb63
2 changed files with 41 additions and 7 deletions
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@ -2,6 +2,9 @@
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## 0.2.3 (unreleased)
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## 0.2.3 (unreleased)
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- Fix compatibility with nix-2.3 where `nix --extra-experimental-features` isn't
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a known flag yet. We have to switch on the version of Nix we've been given.
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## 0.2.2 (2023-05-22)
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## 0.2.2 (2023-05-22)
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- Fixed crash when `nix-store --query --references` returns nothing (e.g. for a
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- Fixed crash when `nix-store --query --references` returns nothing (e.g. for a
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41
src/nvd
41
src/nvd
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@ -53,6 +53,7 @@ signal(SIGPIPE, SIG_DFL) # Python handles SIGPIPE improperly by default.
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NVD_VERSION = "0.2.3"
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NVD_VERSION = "0.2.3"
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NIX_BIN_DIR = None
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NIX_BIN_DIR = None
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USE_NIX_COMMAND_FEATURE = False # Whether to explicitly enable the nix-command feature.
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USE_COLOUR = False
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USE_COLOUR = False
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SGR_RESET = 0
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SGR_RESET = 0
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@ -440,11 +441,9 @@ def query_closure_disk_usage_bytes(target: Path) -> Optional[int]:
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try:
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try:
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stdout = subprocess.run(
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stdout = subprocess.run(
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[
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[make_nix_bin_path("nix")]
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make_nix_bin_path("nix"), "path-info",
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+ make_extra_experimental_features_args()
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"--extra-experimental-features", "nix-command",
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+ ["path-info", "--closure-size", target_str],
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"--closure-size", target_str,
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],
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stdout=PIPE,
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stdout=PIPE,
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text=True
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text=True
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).stdout
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).stdout
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@ -491,6 +490,32 @@ def make_nix_bin_path(exe_name: str) -> str:
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else:
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else:
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return exe_name
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return exe_name
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def make_extra_experimental_features_args() -> List[str]:
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global USE_NIX_COMMAND_FEATURE
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if USE_NIX_COMMAND_FEATURE:
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return ["--extra-experimental-features", "nix-command"]
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else:
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return []
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def query_nix_version() -> Version:
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output = subprocess.run(
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[make_nix_bin_path("nix-build"), "--version"],
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stdout=PIPE,
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text=True,
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check=True,
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).stdout
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first_line = output.split("\n", 1)[0]
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words = first_line.split(" ")
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regex = re.compile(r"^[0-9]+\.[0-9]")
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for word in words:
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if regex.search(word):
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return Version(word)
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raise RuntimeError(
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"Could not determine Nix version from 'nix-store --version' output: {output!r}")
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def run_list(*, root, only_selected, name_patterns):
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def run_list(*, root, only_selected, name_patterns):
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path = Path(root)
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path = Path(root)
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@ -722,6 +747,7 @@ def parse_args():
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def main():
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def main():
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global NIX_BIN_DIR
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global NIX_BIN_DIR
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global USE_NIX_COMMAND_FEATURE
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global USE_COLOUR
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global USE_COLOUR
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global INST_ADDED
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global INST_ADDED
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global INST_REMOVED
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global INST_REMOVED
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@ -748,6 +774,11 @@ def main():
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print("nvd: Subcommand required, see 'nvd --help'.")
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print("nvd: Subcommand required, see 'nvd --help'.")
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sys.exit(1)
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sys.exit(1)
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# Nix 2.4 and later need "experimental-features: nix-command" in order to
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# use the "nix ..." style commands.
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if Version("2.4") < query_nix_version():
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USE_NIX_COMMAND_FEATURE = True
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{
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{
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"list": run_list,
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"list": run_list,
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"diff": run_diff,
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"diff": run_diff,
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