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Provide a better error message for 'nvd list' on non-NixOS systems (fixes #21).
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3 changed files with 15 additions and 2 deletions
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@ -2,6 +2,9 @@
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## 0.2.5 (unreleased)
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- Improve the error message when calling `nvd list`, and `/run/current-system`
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doesn't exist (issue #21).
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## 0.2.4 (2024-09-29)
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- Added an `nvd history` command for diffing successive generations of a
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12
src/nvd
12
src/nvd
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@ -61,6 +61,8 @@ 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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LIST_DEFAULT_ROOT = "/run/current-system"
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SGR_RESET = 0
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SGR_BOLD = 1
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SGR_FG = 30
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@ -937,6 +939,12 @@ def run_list(
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if not path.exists():
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sys.stderr.write(f"Path does not exist: {path}\n")
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if str(path) == LIST_DEFAULT_ROOT:
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sys.stderr.write(
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"Perhaps this isn't a NixOS system?\n"
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"Pass -r/--root to change the target of 'nvd list'.\n"
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"For example: nvd list -r ~/.nix-profile\n"
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)
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sys.exit(1)
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path = path.resolve()
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@ -1233,8 +1241,8 @@ def parse_args():
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add_sort_arg(list_parser)
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list_parser.add_argument(
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"-r", "--root",
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default="/run/current-system",
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help="The The Nix store path to work with.")
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default=LIST_DEFAULT_ROOT,
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help=f"The Nix store path to work with (default {LIST_DEFAULT_ROOT}).")
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list_parser.add_argument(
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nargs="*",
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default=[],
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@ -216,6 +216,8 @@ package are present.
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For the
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.B list
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command, this is the root store path to use, or a link to the store path to use.
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The default is
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.B /run/current-system.
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.TP
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<name-pattern>
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For the
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