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Use "." as the default installable

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This makes e.g. "nix build" do something more or less reasonable
(namely, build the default package of the flake in the current
directory).
This commit is contained in:
Eelco Dolstra 2019-04-19 16:07:37 +02:00
parent 4fb594a375
commit cc51e37ad0
3 changed files with 10 additions and 3 deletions
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1
src/nix/build.cc
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@ -3,7 +3,6 @@
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
#include "primops/flake.hh"
using namespace nix;

8
src/nix/command.hh
View file

@ -108,6 +108,8 @@ struct InstallablesCommand : virtual Args, SourceExprCommand
void prepare() override;
virtual bool useDefaultInstallables() { return true; }
private:
std::vector<std::string> _installables;
@ -119,14 +121,14 @@ struct InstallableCommand : virtual Args, SourceExprCommand
InstallableCommand()
{
expectArg("installable", &_installable);
expectArg("installable", &_installable, true);
}
void prepare() override;
private:
std::string _installable;
std::string _installable{"."};
};
/* A command that operates on zero or more store paths. */
@ -146,6 +148,8 @@ public:
virtual void run(ref<Store> store, Paths storePaths) = 0;
void run(ref<Store> store) override;
bool useDefaultInstallables() override { return !all; }
};
/* A command that operates on exactly one store path. */

4
src/nix/installables.cc
View file

@ -334,6 +334,10 @@ PathSet toDerivations(ref<Store> store,
void InstallablesCommand::prepare()
{
if (_installables.empty() && !file && useDefaultInstallables())
// FIXME: commands like "nix install" should not have a
// default, probably.
_installables.push_back(".");
installables = parseInstallables(getStore(), _installables);
}