Test remote building with fixed output derivations

tests/build-hook-ca.nix

@@ -0,0 +1,45 @@
+{ busybox }:
+
+with import ./config.nix;
+
+let
+
+  mkDerivation = args:
+    derivation ({
+      inherit system;
+      builder = busybox;
+      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" "if [ -e .attrs.sh ]; then source .attrs.sh; fi; eval \"$buildCommand\"")];
+      outputHashMode = "recursive";
+      outputHashAlgo = "sha256";
+    } // removeAttrs args ["builder" "meta"])
+    // { meta = args.meta or {}; };
+
+  input1 = mkDerivation {
+    shell = busybox;
+    name = "build-remote-input-1";
+    buildCommand = "echo FOO > $out";
+    requiredSystemFeatures = ["foo"];
+    outputHash = "sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc=";
+  };
+
+  input2 = mkDerivation {
+    shell = busybox;
+    name = "build-remote-input-2";
+    buildCommand = "echo BAR > $out";
+    requiredSystemFeatures = ["bar"];
+    outputHash = "sha256-XArauVH91AVwP9hBBQNlkX9ccuPpSYx9o0zeIHb6e+Q=";
+  };
+
+in
+
+  mkDerivation {
+    shell = busybox;
+    name = "build-remote";
+    buildCommand =
+      ''
+        read x < ${input1}
+        read y < ${input2}
+        echo "$x $y" > $out
+      '';
+    outputHash = "sha256-3YGhlOfbGUm9hiPn2teXXTT8M1NEpDFvfXkxMaJRld0=";
+  }

tests/build-remote-content-addressed-fixed.sh

@@ -0,0 +1,5 @@
+source common.sh
+
+file=build-hook-ca.nix
+
+source build-remote.sh

tests/build-remote-input-addressed.sh

@@ -0,0 +1,5 @@
+source common.sh
+
+file=build-hook.nix
+
+source build-remote.sh

tests/build-remote.sh

@@ -1,5 +1,3 @@
-source common.sh
-
 if ! canUseSandbox; then exit; fi
 if ! [[ $busybox =~ busybox ]]; then exit; fi
 
@@ -18,7 +16,7 @@ builders=(
 # Note: ssh://localhost bypasses ssh, directly invoking nix-store as a
 # child process. This allows us to test LegacySSHStore::buildDerivation().
 # ssh-ng://... likewise allows us to test RemoteStore::buildDerivation().
-nix build -L -v -f build-hook.nix -o $TEST_ROOT/result --max-jobs 0 \
+nix build -L -v -f $file -o $TEST_ROOT/result --max-jobs 0 \
   --arg busybox $busybox \
   --store $TEST_ROOT/machine0 \
   --builders "$(join_by '; ' "${builders[@]}")"

tests/local.mk

@@ -14,7 +14,8 @@ nix_tests = \
   placeholders.sh nix-shell.sh \
   linux-sandbox.sh \
   build-dry.sh \
-  build-remote.sh \
+  build-remote-input-addressed.sh \
+  build-remote-content-addressed-fixed.sh \
   nar-access.sh \
   structured-attrs.sh \
   fetchGit.sh \