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Remove the --delete option for --gc

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Running `nix-store --gc --delete` will, as of Nix 2.3.3, simply fail
because the --delete option conflicts with the --delete operation.

  $ nix-store --gc --delete
  error: only one operation may be specified
  Try 'nix-store --help' for more information.

Furthermore, it has been broken since at least Nix 0.16 (which was
released sometime in 2010), which means that any scripts which depend
on it should have been broken at least nine years ago. This commit
simply formally removes the option. There should be no actual difference
in behaviour as far as the user is concerned: it errors with the exact
same error message. The manual has been edited to remove any references
to the (now gone) --delete option.

Other information:
* Path for Nix 0.16 used:
  /nix/store/rp3sgmskn0p0pj1ia2qwd5al6f6pinz4-nix-0.16
This commit is contained in:
jakobrs 2020-03-19 19:15:55 +01:00
parent ef74fafc03
commit c5a488afc0
2 changed files with 4 additions and 14 deletions
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src/nix-store/nix-store.cc
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@ -577,7 +577,6 @@ static void opGC(Strings opFlags, Strings opArgs)
if (*i == "--print-roots") printRoots = true;
else if (*i == "--print-live") options.action = GCOptions::gcReturnLive;
else if (*i == "--print-dead") options.action = GCOptions::gcReturnDead;
else if (*i == "--delete") options.action = GCOptions::gcDeleteDead;
else if (*i == "--max-freed") {
long long maxFreed = getIntArg<long long>(*i, i, opFlags.end(), true);
options.maxFreed = maxFreed >= 0 ? maxFreed : 0;