fix dependencies between tasks

due to using an old snapshot of cue.Value, components relying on
dependent tasks were failing because of non-concretness.

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

examples/tests/dependencies/interpolation/main.cue

@@ -0,0 +1,51 @@
+package testing
+
+A: {
+	result: string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			args: ["sh", "-c", """
+				echo '{"result": "from A"}' > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "json"
+		},
+	]
+}
+
+B: {
+	result: string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			args: ["sh", "-c", """
+				echo "{\\"result\\": \\"dependency \(A.result)\\"}" > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "json"
+		},
+	]
+}

examples/tests/dependencies/simple/main.cue

@@ -0,0 +1,52 @@
+package testing
+
+A: {
+	result: string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			args: ["sh", "-c", """
+				echo '{"result": "from A"}' > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "json"
+		},
+	]
+}
+
+B: {
+	result: string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			env: DATA: A.result
+			args: ["sh", "-c", """
+				echo "{\\"result\\": \\"dependency $DATA\\"}" > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "json"
+		},
+	]
+}

examples/tests/dependencies/unmarshal/main.cue

@@ -0,0 +1,55 @@
+package testing
+
+import "encoding/json"
+
+A: {
+	string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			args: ["sh", "-c", """
+				echo '{"hello": "world"}' > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "string"
+		},
+	]
+}
+
+unmarshalled: json.Unmarshal(A)
+
+B: {
+	result: string
+
+	#dagger: compute: [
+		{
+			do:  "fetch-container"
+			ref: "alpine"
+		},
+		{
+			do: "exec"
+			args: ["sh", "-c", """
+				echo "{\\"result\\": \\"unmarshalled.hello=\(unmarshalled.hello)\\"}" > /tmp/out
+				""",
+			]
+			dir: "/"
+		},
+		{
+			do: "export"
+			// Source path in the container
+			source: "/tmp/out"
+			format: "json"
+		},
+	]
+}

examples/tests/test.sh

@@ -41,6 +41,17 @@ test::compute(){
       "$dagger" "${DAGGER_BINARY_ARGS[@]}" compute "$d"/compute/success/overload/wrapped
 }
 
+test::dependencies(){
+  local dagger="$1"
+
+  test::one "Dependencies: simple direct dependency" --exit=0 --stdout='{"A":{"result":"from A"},"B":{"result":"dependency from A"}}'  \
+      "$dagger" "${DAGGER_BINARY_ARGS[@]}" compute "$d"/dependencies/simple
+  test::one "Dependencies: interpolation" --exit=0 --stdout='{"A":{"result":"from A"},"B":{"result":"dependency from A"}}'  \
+      "$dagger" "${DAGGER_BINARY_ARGS[@]}" compute "$d"/dependencies/interpolation
+  test::one "Dependencies: json.Unmarshal" --exit=0 --stdout='{"A":"{\"hello\": \"world\"}\n","B":{"result":"unmarshalled.hello=world"},"unmarshalled":{"hello":"world"}}'  \
+      "$dagger" "${DAGGER_BINARY_ARGS[@]}" compute "$d"/dependencies/unmarshal
+}
+
 test::fetchcontainer(){
   local dagger="$1"