feat(tvix/derivation): serialize Nix Derivation r/5536

This adds a Derivation structure and allows to write it to a structure that implements std::fmt:Write.
The implementation is based on the go-nix version.

Change-Id: Ib54e1202b5c67f5d206b21bc109a751e971064cf
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7659
Reviewed-by: flokli <flokli@flokli.de>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

1 files changed, 23 insertions, 0 deletions

diff --git a/tvix/derivation/src/tests/derivation_tests/h32dahq0bx5rp1krcdx3a53asj21jvhk-has-multi-out.drv.json b/tvix/derivation/src/tests/derivation_tests/h32dahq0bx5rp1krcdx3a53asj21jvhk-has-multi-out.drv.json
new file mode 100644
index 000000000000..12cb3481980e
--- /dev/null
+++ b/tvix/derivation/src/tests/derivation_tests/h32dahq0bx5rp1krcdx3a53asj21jvhk-has-multi-out.drv.json
@@ -0,0 +1,23 @@
+{
+  "outputs": {
+    "lib": {
+      "path": "/nix/store/2vixb94v0hy2xc6p7mbnxxcyc095yyia-has-multi-out-lib"
+    },
+    "out": {
+      "path": "/nix/store/55lwldka5nyxa08wnvlizyqw02ihy8ic-has-multi-out"
+    }
+  },
+  "input_sources": [],
+  "input_derivations": {},
+  "platform": ":",
+  "builder": ":",
+  "arguments": [],
+  "environment": {
+    "builder": ":",
+    "lib": "/nix/store/2vixb94v0hy2xc6p7mbnxxcyc095yyia-has-multi-out-lib",
+    "name": "has-multi-out",
+    "out": "/nix/store/55lwldka5nyxa08wnvlizyqw02ihy8ic-has-multi-out",
+    "outputs": "out lib",
+    "system": ":"
+  }
+}