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daemon: Remove ‘singleton’ and replace ‘typedef’ with ‘using’ in ‘types.hh’

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* nix/libutil/util.hh (singleton): Remove.
* nix/libstore/build.cc (DerivationGoal::startBuilder)
(SubstitutionGoal::tryNext, SubstitutionGoal::tryToRun)
(LocalStore::ensurePath, LocalStore::repairPath): Use normal
construction function instead of ‘singleton’.
* nix/libstore/local-store.cc (LocalStore::addToStoreFromDump)
(LocalStore::addTextToStore, LocalStore::importPath): Likewise.
* nix/nix-daemon/nix-daemon.cc (performOp): Likewise.

Change-Id: If0d929407c09482f3b506a1c51dfda70e29696dd
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Congcong Kuo 2025-05-26 00:49:26 +08:00 • committed by Ludovic Courtès
parent 8a6cf4fad6
commit 4b9d14378f
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5 changed files with 17 additions and 27 deletions
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9
nix/libutil/util.hh
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@ -121,15 +121,6 @@ Paths createDirs(const Path & path);
void createSymlink(const Path & target, const Path & link);
template<class T, class A>
T singleton(const A & a)
{
T t;
t.insert(a);
return t;
}
/* Messages. */