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use nixpkgs#bashInteractive for dev-shell

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This commit is contained in:
Matthew Kenigsberg 2020-04-27 12:17:58 -06:00
parent 5f64655ff4
commit 8fbc8540d3
1 changed files with 39 additions and 2 deletions
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41
src/nix/dev-shell.cc
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@ -6,6 +6,9 @@
#include "derivations.hh"
#include "affinity.hh"
#include "progress-bar.hh"
#include "attr-path.hh"
#include "eval-cache.hh"
#include "flake/flake.hh"
#include <regex>
@ -281,6 +284,41 @@ struct CmdDevShell : Common, MixEnvironment
};
}
std::string getBashPath(ref<Store> store)
{
auto flakeRef = FlakeRef::fromAttrs({{"type","indirect"}, {"id", "nixpkgs"}});
auto state = getEvalState();
auto lockedFlake = std::make_shared<flake::LockedFlake>(lockFlake(*state, flakeRef, lockFlags));
auto cache = openEvalCache(*state, lockedFlake, true);
auto root = cache->getRoot();
auto attrPath = "legacyPackages." + settings.thisSystem.get() + ".bashInteractive";
auto attr = root->findAlongAttrPath(parseAttrPath(*state, attrPath));
if (!attr || !attr->isDerivation()) throw Error("couldn't find bashInteractive derivation");
auto aDrvPath = attr->getAttr(state->sDrvPath);
auto drvPath = store->parseStorePath(aDrvPath->getString());
if (!store->isValidPath(drvPath) && !settings.readOnlyMode) {
/* The eval cache contains 'drvPath', but the actual path
has been garbage-collected. So force it to be
regenerated. */
aDrvPath->forceValue();
if (!store->isValidPath(drvPath))
throw Error("don't know how to recreate store derivation '%s'!",
store->printStorePath(drvPath));
}
auto outputName = attr->getAttr(state->sOutputName)->getString();
if (outputName == "")
throw Error("derivation '%s' lacks an 'outputName' attribute", store->printStorePath(drvPath));
auto outPath = store->parseStorePath(attr->getAttr(state->sOutPath)->getString());
store->buildPaths({{drvPath, {outputName}}});
return store->printStorePath(outPath) + "/bin/bash";
}
void run(ref<Store> store) override
{
auto [buildEnvironment, gcroot] = getBuildEnvironment(store);
@ -303,12 +341,11 @@ struct CmdDevShell : Common, MixEnvironment
stopProgressBar();
auto shell = getEnv("SHELL").value_or("bash");
setEnviron();
// prevent garbage collection until shell exits
setenv("NIX_GCROOT", gcroot.data(), 1);
auto shell = getBashPath(store);
auto args = Strings{std::string(baseNameOf(shell)), "--rcfile", rcFilePath};
restoreAffinity();