From 18d2edf330e6932c177e71b1c7831a7a5ad77e38 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Tue, 18 Feb 2020 11:25:34 +0100
Subject: Add plain persistent nix-shell wrapper

Automatically adds GC roots, including a fix for an implicit interactiveBash dependency
---
 pkgs/persistent-nix-shell/default.nix | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 pkgs/persistent-nix-shell/default.nix

(limited to 'pkgs/persistent-nix-shell')

diff --git a/pkgs/persistent-nix-shell/default.nix b/pkgs/persistent-nix-shell/default.nix
new file mode 100644
index 0000000..8a74eb4
--- /dev/null
+++ b/pkgs/persistent-nix-shell/default.nix
@@ -0,0 +1,20 @@
+{ stdenv, pkgs, ... }:
+
+pkgs.writeTextFile {
+  name        = "persistent-nix-shell";
+  executable  = true;
+  destination = "/bin/persistent-nix-shell";
+
+  text = ''
+    #!/bin/sh -eu
+
+    mkdir -p .gcroots
+
+    nix-instantiate shell.nix --indirect --add-root $PWD/.gcroots/shell.drv > /dev/null
+    nix-store -r $(nix-store --query --references $PWD/.gcroots/shell.drv) --indirect --add-root $PWD/.gcroots/shell.dep > /dev/null
+
+    # Fix to prevent implicit interactiveBash dependency
+    export NIX_BUILD_SHELL=/run/current-system/sw/bin/bash
+    exec nix-shell $(readlink $PWD/.gcroots/shell.drv) "$@"
+  '';
+}
-- 
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