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Merge pull request #6702 from ncfavier/develop-prepend-vars

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nix develop: save XDG_DATA_DIRS for loadable completion
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Eelco Dolstra 2022-06-29 14:49:31 +02:00 committed by GitHub
parent 7633764342 155c57c171
commit 4248174e71
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1 changed files with 12 additions and 2 deletions
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14
src/nix/develop.cc
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@ -276,15 +276,25 @@ struct Common : InstallableCommand, MixProfile
const BuildEnvironment & buildEnvironment,
const Path & outputsDir = absPath(".") + "/outputs")
{
// A list of colon-separated environment variables that should be
// prepended to, rather than overwritten, in order to keep the shell usable.
// Please keep this list minimal in order to avoid impurities.
static const char * const savedVars[] = {
"PATH", // for commands
"XDG_DATA_DIRS", // for loadable completion
};
std::ostringstream out;
out << "unset shellHook\n";
out << "nix_saved_PATH=\"$PATH\"\n";
for (auto & var : savedVars)
out << fmt("nix_saved_%s=\"$%s\"\n", var, var);
buildEnvironment.toBash(out, ignoreVars);
out << "PATH=\"$PATH:$nix_saved_PATH\"\n";
for (auto & var : savedVars)
out << fmt("%s=\"$%s:$nix_saved_%s\"\n", var, var, var);
out << "export NIX_BUILD_TOP=\"$(mktemp -d -t nix-shell.XXXXXX)\"\n";
for (auto & i : {"TMP", "TMPDIR", "TEMP", "TEMPDIR"})