fails to clean materialized view that has dependent view on postgres

[teicher]

$ psql -d flywaytest
psql (9.3.6)
Type "help" for help.

flywaytest=# CREATE MATERIALIZED VIEW v_dwh_dim_date_mat AS select now();
SELECT 1
flywaytest=# CREATE OR REPLACE VIEW v_dwh_dim_date AS SELECT * from v_dwh_dim_date_mat;
CREATE VIEW
flywaytest=# \q

$ ant -f build-db.xml flywaytest
Buildfile: build-db.xml

flywaytest:
[flyway:clean] Flyway 3.2.1 by Boxfuse
[flyway:clean] Database: jdbc:postgresql://localhost:5432/flywaytest (PostgreSQL 9.3)

BUILD FAILED
build-db.xml:40: Flyway Error: org.flywaydb.core.api.FlywayException: Unable to drop "public"."v_dwh_dim_date_mat"

Total time: 0 seconds

with
    <target name="flywaytest">
        <flyway:clean url="jdbc:postgresql://${database.host}:${database.port}/flywaytest" />
    </target>

[axelfontaine]

I couldn't reproduce the case exactly (your test wasn't failing for me), but I've now added explicit cleaning of materialized views. Please check this now works for you.