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nix dev-shell: Add --profile flag

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This is useful to prevent the shell environment from being
garbage-collected.
This commit is contained in:
Eelco Dolstra 2019-07-12 16:10:58 +02:00
parent 990b5b2dcf
commit 7ba928116e
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GPG key ID: 8170B4726D7198DE
1 changed files with 15 additions and 5 deletions
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20
src/nix/shell.cc
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@ -66,7 +66,7 @@ BuildEnvironment readEnvironment(const Path & path)
modified derivation with the same dependencies and nearly the same
initial environment variables, that just writes the resulting
environment to a file and exits. */
BuildEnvironment getDerivationEnvironment(ref<Store> store, Derivation drv)
Path getDerivationEnvironment(ref<Store> store, Derivation drv)
{
auto builder = baseNameOf(drv.builder);
if (builder != "bash")
@ -101,7 +101,7 @@ BuildEnvironment getDerivationEnvironment(ref<Store> store, Derivation drv)
assert(store->isValidPath(shellOutPath));
return readEnvironment(shellOutPath);
return shellOutPath;
}
struct Common : InstallableCommand
@ -175,7 +175,7 @@ struct Common : InstallableCommand
}
};
struct CmdDevShell : Common
struct CmdDevShell : Common, MixProfile
{
std::string description() override
{
@ -193,6 +193,10 @@ struct CmdDevShell : Common
"To get the build environment of the default package of flake in the current directory:",
"nix dev-shell"
},
Example{
"To store the build environment in a profile:",
"nix dev-shell --profile /tmp/my-shell"
},
};
}
@ -206,7 +210,11 @@ struct CmdDevShell : Common
auto & drvPath = *drvs.begin();
auto buildEnvironment = getDerivationEnvironment(store, store->derivationFromPath(drvPath));
auto shellOutPath = getDerivationEnvironment(store, store->derivationFromPath(drvPath));
updateProfile(shellOutPath);
auto buildEnvironment = readEnvironment(shellOutPath);
auto [rcFileFd, rcFilePath] = createTempFile("nix-shell");
@ -259,7 +267,9 @@ struct CmdPrintDevEnv : Common
auto & drvPath = *drvs.begin();
auto buildEnvironment = getDerivationEnvironment(store, store->derivationFromPath(drvPath));
auto buildEnvironment = readEnvironment(
getDerivationEnvironment(store,
store->derivationFromPath(drvPath)));
stopProgressBar();