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nix-shell: Use bashInteractive from <nixpkgs>

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This adds about 0.1s to nix-shell runtime in the case where
bashInteractive already exists.

See discussion at https://github.com/NixOS/nixpkgs/issues/27493.
This commit is contained in:
Eelco Dolstra 2017-07-20 13:32:01 +02:00
parent 57a30e101b
commit c94f3d5575
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GPG key ID: 8170B4726D7198DE
5 changed files with 54 additions and 13 deletions
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8
src/libexpr/get-drvs.hh
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@ -75,10 +75,10 @@ typedef list<DrvInfo> DrvInfos;
#endif
/* If value `v' denotes a derivation, store information about the
derivation in `drv' and return true. Otherwise, return false. */
bool getDerivation(EvalState & state, Value & v, DrvInfo & drv,
bool ignoreAssertionFailures);
/* If value `v' denotes a derivation, return a DrvInfo object
describing it. Otherwise return nothing. */
std::experimental::optional<DrvInfo> getDerivation(EvalState & state,
Value & v, bool ignoreAssertionFailures);
void getDerivations(EvalState & state, Value & v, const string & pathPrefix,
Bindings & autoArgs, DrvInfos & drvs,