diff --git a/src/nix/develop.cc b/src/nix/develop.cc
index 10f843651b0fea21fe19d569699e6aa9447c586d..aeeaf3e130606ad33190eaea0d8c87115aff435a 100644
--- a/src/nix/develop.cc
+++ b/src/nix/develop.cc
@@ -144,17 +144,26 @@ StorePath getDerivationEnvironment(ref<Store> store, const StorePath & drvPath)
     /* Rehash and write the derivation. FIXME: would be nice to use
        'buildDerivation', but that's privileged. */
     drv.name += "-env";
-    for (auto & output : drv.outputs) {
-        output.second = { .output = DerivationOutputInputAddressed { .path = StorePath::dummy } };
-        drv.env[output.first] = "";
-    }
     drv.inputSrcs.insert(std::move(getEnvShPath));
-    Hash h = std::get<0>(hashDerivationModulo(*store, drv, true));
+    if (settings.isExperimentalFeatureEnabled("ca-derivations")) {
+        for (auto & output : drv.outputs) {
+            output.second = {
+                .output = DerivationOutputDeferred{},
+            };
+            drv.env[output.first] = "";
+        }
+    } else {
+        for (auto & output : drv.outputs) {
+            output.second = { .output = DerivationOutputInputAddressed { .path = StorePath::dummy } };
+            drv.env[output.first] = "";
+        }
+        Hash h = std::get<0>(hashDerivationModulo(*store, drv, true));
 
-    for (auto & output : drv.outputs) {
-        auto outPath = store->makeOutputPath(output.first, h, drv.name);
-        output.second = { .output = DerivationOutputInputAddressed { .path = outPath } };
-        drv.env[output.first] = store->printStorePath(outPath);
+        for (auto & output : drv.outputs) {
+            auto outPath = store->makeOutputPath(output.first, h, drv.name);
+            output.second = { .output = DerivationOutputInputAddressed { .path = outPath } };
+            drv.env[output.first] = store->printStorePath(outPath);
+        }
     }
 
     auto shellDrvPath = writeDerivation(*store, drv);
@@ -162,8 +171,7 @@ StorePath getDerivationEnvironment(ref<Store> store, const StorePath & drvPath)
     /* Build the derivation. */
     store->buildPaths({DerivedPath::Built{shellDrvPath}});
 
-    for (auto & [_0, outputAndOptPath] : drv.outputsAndOptPaths(*store)) {
-        auto & [_1, optPath] = outputAndOptPath;
+    for (auto & [_0, optPath] : store->queryPartialDerivationOutputMap(shellDrvPath)) {
         assert(optPath);
         auto & outPath = *optPath;
         assert(store->isValidPath(outPath));
diff --git a/tests/nix-shell.sh b/tests/nix-shell.sh
index e3174dac19c78b0cdf923120ea270c4d8d411fd6..3481c2c69cba26ef82e97a81019da1128a087fc7 100644
--- a/tests/nix-shell.sh
+++ b/tests/nix-shell.sh
@@ -6,6 +6,14 @@ if [[ -n ${CONTENT_ADDRESSED:-} ]]; then
     nix-shell () {
         command nix-shell --arg contentAddressed true "$@"
     }
+
+    nix_develop() {
+        nix develop --arg contentAddressed true "$@"
+    }
+else
+    nix_develop() {
+        nix develop "$@"
+    }
 fi
 
 # Test nix-shell -A
@@ -79,13 +87,13 @@ output=$($TEST_ROOT/spaced\ \\\'\"shell.shebang.rb abc ruby)
 [ "$output" = '-e load(ARGV.shift) -- '"$TEST_ROOT"'/spaced \'\''"shell.shebang.rb abc ruby' ]
 
 # Test 'nix develop'.
-nix develop -f shell.nix shellDrv -c bash -c '[[ -n $stdenv ]]'
+nix_develop -f shell.nix shellDrv -c bash -c '[[ -n $stdenv ]]'
 
 # Ensure `nix develop -c` preserves stdin
 echo foo | nix develop -f shell.nix shellDrv -c cat | grep -q foo
 
 # Ensure `nix develop -c` actually executes the command if stdout isn't a terminal
-nix develop -f shell.nix shellDrv -c echo foo |& grep -q foo
+nix_develop -f shell.nix shellDrv -c echo foo |& grep -q foo
 
 # Test 'nix print-dev-env'.
 source <(nix print-dev-env -f shell.nix shellDrv)