diff --git a/.envrc b/.envrc
index e080e228..56451c1a 100644
--- a/.envrc
+++ b/.envrc
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-use flake
+use flake ".#${DIRENV_DEVSHELL:-default}"
 
 PATH_add bin
 
diff --git a/bin/nix-build-and-cache b/bin/nix-build-and-cache
index 4c2a8d71..ff06bc96 100755
--- a/bin/nix-build-and-cache
+++ b/bin/nix-build-and-cache
@@ -51,6 +51,7 @@ ci() {
 
         # Keep sorted
         "$toplevel#devShells.x86_64-linux.default"
+        "$toplevel#devShells.x86_64-linux.all-features"
         attic#default
         nixpkgs#direnv
         nixpkgs#jq
diff --git a/engage.toml b/engage.toml
index ec3b4066..3a78a737 100644
--- a/engage.toml
+++ b/engage.toml
@@ -68,13 +68,15 @@ script = "cargo clippy --workspace --all-targets --color=always -- -D warnings"
 name = "cargo-clippy/all"
 group = "lints"
 script = """
-cargo clippy \
-    --workspace \
-    --all-targets \
-    --all-features \
-    --color=always \
-    -- \
-    -D warnings
+env DIRENV_DEVSHELL=all-features \
+    direnv exec . \
+    cargo clippy \
+        --workspace \
+        --all-targets \
+        --all-features \
+        --color=always \
+        -- \
+        -D warnings
 """
 
 [[task]]