diff --git a/ibis/backends/dask/execution/strings.py b/ibis/backends/dask/execution/strings.py
@@ -28,6 +28,7 @@
     execute_series_translate_series_series,
     execute_string_capitalize,
     execute_string_contains,
+    execute_string_find,
     execute_string_length_series,
     execute_string_like_series_string,
     execute_string_lower,
@@ -93,6 +94,15 @@
                 (dd.Series, type(None)) + integer_types,
                 (dd.Series, type(None)) + integer_types,
             ),
+            execute_string_find,
+        )
+    ],
+    ops.StringContains: [
+        (
+            (
+                dd.Series,
+                (dd.Series, str),
+            ),
             execute_string_contains,
         )
     ],

diff --git a/ibis/backends/duckdb/compiler.py b/ibis/backends/duckdb/compiler.py
@@ -22,7 +22,8 @@ class DuckDBSQLExprTranslator(AlchemyExprTranslator):
 @rewrites(ops.All)
 @rewrites(ops.NotAny)
 @rewrites(ops.NotAll)
-def _any_all_no_op(expr):
+@rewrites(ops.StringContains)
+def _no_op(expr):
     return expr
 
 

diff --git a/ibis/backends/duckdb/registry.py b/ibis/backends/duckdb/registry.py
@@ -148,7 +148,7 @@ def _regex_extract(t, expr):
 operation_registry.update(
     {
         ops.ArrayColumn: _array_column,
-        ops.ArrayConcat: fixed_arity('array_concat', 2),
+        ops.ArrayConcat: fixed_arity(sa.func.array_concat, 2),
         ops.DayOfWeekName: unary(sa.func.dayname),
         ops.Literal: _literal,
         ops.Log2: unary(sa.func.log2),
@@ -159,12 +159,13 @@ def _regex_extract(t, expr):
         ops.Round: _round,
         ops.StructField: _struct_field,
         ops.TableColumn: _table_column,
-        ops.TimestampDiff: fixed_arity('age', 2),
+        ops.TimestampDiff: fixed_arity(sa.func.age, 2),
         ops.TimestampFromUNIX: _timestamp_from_unix,
-        ops.Translate: fixed_arity('replace', 3),
-        ops.TimestampNow: fixed_arity('now', 0),
+        ops.Translate: fixed_arity(sa.func.replace, 3),
+        ops.TimestampNow: fixed_arity(sa.func.now, 0),
         ops.RegexExtract: _regex_extract,
-        ops.RegexReplace: fixed_arity("regexp_replace", 3),
+        ops.RegexReplace: fixed_arity(sa.func.regexp_replace, 3),
+        ops.StringContains: fixed_arity(sa.func.contains, 2),
     }
 )
 

diff --git a/ibis/backends/pandas/execution/strings.py b/ibis/backends/pandas/execution/strings.py
@@ -118,14 +118,19 @@ def execute_string_repeat(op, data, times, **kwargs):
     return data.str.repeat(times)
 
 
+@execute_node.register(ops.StringContains, pd.Series, (pd.Series, str))
+def execute_string_contains(_, data, needle, **kwargs):
+    return data.str.contains(needle)
+
+
 @execute_node.register(
     ops.StringFind,
     pd.Series,
     (pd.Series, str),
     (pd.Series, type(None)) + integer_types,
     (pd.Series, type(None)) + integer_types,
 )
-def execute_string_contains(op, data, needle, start, end, **kwargs):
+def execute_string_find(op, data, needle, start, end, **kwargs):
     return data.str.find(needle, start, end)
 
 

diff --git a/ibis/backends/pyspark/compiler.py b/ibis/backends/pyspark/compiler.py
@@ -1906,3 +1906,11 @@ def compile_sql_view(t, expr, scope, timecontext, **kwargs):
     result = backend._session.sql(op.query)
     result.createOrReplaceTempView(op.name)
     return result
+
+
+@compiles(ops.StringContains)
+def compile_string_contains(t, expr, scope, timecontext, **kwargs):
+    op = expr.op()
+    haystack = t.translate(op.haystack, scope, timecontext, **kwargs)
+    needle = t.translate(op.needle, scope, timecontext, **kwargs)
+    return haystack.contains(needle)
diff --git a/ibis/expr/operations/strings.py b/ibis/expr/operations/strings.py
@@ -248,3 +248,12 @@ class StringLength(UnaryOp):
 @public
 class StringAscii(UnaryOp):
     output_dtype = dt.int32
+
+
+@public
+class StringContains(ValueOp):
+    haystack = rlz.string
+    needle = rlz.string
+
+    output_shape = rlz.shape_like("args")
+    output_dtype = dt.bool
diff --git a/ibis/expr/types/strings.py b/ibis/expr/types/strings.py
@@ -180,7 +180,9 @@ def contains(self, substr: str | StringValue) -> ir.BooleanValue:
         BooleanValue
             Boolean indicating the presence of `substr` in the expression
         """
-        return self.find(substr) >= 0
+        import ibis.expr.operations as ops
+
+        return ops.StringContains(self, substr).to_expr()
 
     def hashbytes(
         self,

diff --git a/ibis/tests/expr/test_string.py b/ibis/tests/expr/test_string.py
@@ -89,8 +89,7 @@ def test_join(table):
 
 def test_contains(table):
     expr = table.g.contains('foo')
-    expected = table.g.find('foo') >= 0
-    assert_equal(expr, expected)
+    assert isinstance(expr.op(), ops.StringContains)
 
     with pytest.raises(TypeError):
         'foo' in table.g

diff --git a/ibis/tests/sql/test_compiler.py b/ibis/tests/sql/test_compiler.py
@@ -131,7 +131,7 @@ def test_pushdown_with_or():
     expected = """\
 SELECT *
 FROM functional_alltypes
-WHERE ((`double_col` > 3.14) AND (locate('foo', `string_col`) - 1 >= 0)) AND
+WHERE ((`double_col` > 3.14) AND locate('foo', `string_col`) - 1 >= 0) AND
       (((`int_col` - 1) = 0) OR (`float_col` <= 1.34))"""
     assert result == expected
 

diff --git a/mkdocs.yml b/mkdocs.yml
@@ -33,6 +33,7 @@ plugins:
   - search
   - mike
   - autorefs
+  - git-revision-date-localized
   - exclude:
       glob:
         - backends/template.md

diff --git a/nix/sources.json b/nix/sources.json
diff --git a/patches/datafusion-macos.patch b/patches/datafusion-macos.patch
@@ -0,0 +1,170 @@
+diff --git a/Cargo.lock b/Cargo.lock
+index d73083f..489f301 100644
+--- a/Cargo.lock
++++ b/Cargo.lock
+@@ -277,9 +277,9 @@ dependencies = [
+
+ [[package]]
+ name = "datafusion"
+-version = "7.0.0"
++version = "7.1.0"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "30cf8e6735817bb021748d72cecc33e468d8775bf749470c52aa7f55ee5cdf9e"
++checksum = "79a0ea0a500cbfb6b683ad8cc6f403faa7c897432cc8ad0da40c09a9a705255f"
+ dependencies = [
+  "ahash",
+  "arrow",
+@@ -384,9 +384,9 @@ dependencies = [
+
+ [[package]]
+ name = "flate2"
+-version = "1.0.22"
++version = "1.0.23"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "1e6988e897c1c9c485f43b47a529cef42fde0547f9d8d41a7062518f1d8fc53f"
++checksum = "b39522e96686d38f4bc984b9198e3a0613264abaebaff2c5c918bfa6b6da09af"
+ dependencies = [
+  "cfg-if",
+  "crc32fast",
+@@ -701,9 +701,9 @@ dependencies = [
+
+ [[package]]
+ name = "libc"
+-version = "0.2.121"
++version = "0.2.124"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "efaa7b300f3b5fe8eb6bf21ce3895e1751d9665086af2d64b42f19701015ff4f"
++checksum = "21a41fed9d98f27ab1c6d161da622a4fa35e8a54a8adc24bbf3ddd0ef70b0e50"
+
+ [[package]]
+ name = "libmimalloc-sys"
+@@ -779,12 +779,11 @@ dependencies = [
+
+ [[package]]
+ name = "miniz_oxide"
+-version = "0.4.4"
++version = "0.5.1"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
++checksum = "d2b29bd4bc3f33391105ebee3589c19197c4271e3e5a9ec9bfe8127eeff8f082"
+ dependencies = [
+  "adler",
+- "autocfg",
+ ]
+
+ [[package]]
+@@ -1047,18 +1046,18 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
+
+ [[package]]
+ name = "proc-macro2"
+-version = "1.0.36"
++version = "1.0.37"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
++checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
+ dependencies = [
+  "unicode-xid",
+ ]
+
+ [[package]]
+ name = "pyo3"
+-version = "0.15.1"
++version = "0.15.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "7cf01dbf1c05af0a14c7779ed6f3aa9deac9c3419606ac9de537a2d649005720"
++checksum = "d41d50a7271e08c7c8a54cd24af5d62f73ee3a6f6a314215281ebdec421d5752"
+ dependencies = [
+  "cfg-if",
+  "indoc",
+@@ -1072,18 +1071,18 @@ dependencies = [
+
+ [[package]]
+ name = "pyo3-build-config"
+-version = "0.15.1"
++version = "0.15.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "dbf9e4d128bfbddc898ad3409900080d8d5095c379632fbbfbb9c8cfb1fb852b"
++checksum = "779239fc40b8e18bc8416d3a37d280ca9b9fb04bda54b98037bb6748595c2410"
+ dependencies = [
+  "once_cell",
+ ]
+
+ [[package]]
+ name = "pyo3-macros"
+-version = "0.15.1"
++version = "0.15.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "67701eb32b1f9a9722b4bc54b548ff9d7ebfded011c12daece7b9063be1fd755"
++checksum = "00b247e8c664be87998d8628e86f282c25066165f1f8dda66100c48202fdb93a"
+ dependencies = [
+  "pyo3-macros-backend",
+  "quote",
+@@ -1092,9 +1091,9 @@ dependencies = [
+
+ [[package]]
+ name = "pyo3-macros-backend"
+-version = "0.15.1"
++version = "0.15.2"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "f44f09e825ee49a105f2c7b23ebee50886a9aee0746f4dd5a704138a64b0218a"
++checksum = "5a8c2812c412e00e641d99eeb79dd478317d981d938aa60325dfa7157b607095"
+ dependencies = [
+  "proc-macro2",
+  "pyo3-build-config",
+@@ -1104,9 +1103,9 @@ dependencies = [
+
+ [[package]]
+ name = "quote"
+-version = "1.0.17"
++version = "1.0.18"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "632d02bff7f874a36f33ea8bb416cd484b90cc66c1194b1a1110d067a7013f58"
++checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
+ dependencies = [
+  "proc-macro2",
+ ]
+@@ -1341,9 +1340,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
+
+ [[package]]
+ name = "syn"
+-version = "1.0.90"
++version = "1.0.91"
+ source = "registry+https://github.com/rust-lang/crates.io-index"
+-checksum = "704df27628939572cd88d33f171cd6f896f4eaca85252c6e0a72d8d8287ee86f"
++checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
+ dependencies = [
+  "proc-macro2",
+  "quote",
+diff --git a/Cargo.toml b/Cargo.toml
+index ba2f337..40cba00 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -35,7 +35,7 @@ datafusion = { version = "^7.0.0", features = ["pyarrow"] }
+ datafusion-expr = { version = "^7.0.0" }
+ datafusion-common = { version = "^7.0.0", features = ["pyarrow"] }
+ uuid = { version = "0.8", features = ["v4"] }
+-mimalloc = { version = "*", default-features = false }
++mimalloc = { version = "*", optional = true, default-features = false }
+
+ [lib]
+ name = "datafusion_python"
+diff --git a/src/lib.rs b/src/lib.rs
+index 977d9e8..ca1cd17 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -15,6 +15,7 @@
+ // specific language governing permissions and limitations
+ // under the License.
+
++#[cfg(feature = "mimalloc")]
+ use mimalloc::MiMalloc;
+ use pyo3::prelude::*;
+
+@@ -28,6 +29,7 @@ mod udaf;
+ mod udf;
+ pub mod utils;
+
++#[cfg(feature = "mimalloc")]
+ #[global_allocator]
+ static GLOBAL: MiMalloc = MiMalloc;
+
diff --git a/patches/watchdog-force-kqueue.patch b/patches/watchdog-force-kqueue.patch
@@ -0,0 +1,13 @@
+diff --git a/setup.py b/setup.py
+index 072dfc8..cb9aa7a 100644
+--- a/setup.py
++++ b/setup.py
+@@ -39,7 +39,7 @@ _apple_devices = ('appletv', 'iphone', 'ipod', 'ipad', 'watch')
+ is_macos = sys.platform == 'darwin' and not machine().lower().startswith(_apple_devices)
+
+ ext_modules = []
+-if is_macos or os.getenv('FORCE_MACOS_MACHINE', '0') == '1':
++if False:
+     ext_modules = [
+         Extension(
+             name='_watchdog_fsevents',
diff --git a/poetry-overrides.nix b/poetry-overrides.nix
@@ -16,17 +16,30 @@ self: super:
       });
   });
 
-  datafusion = super.datafusion.overridePythonAttrs (attrs: {
+  datafusion = super.datafusion.overridePythonAttrs (attrs: rec {
+    inherit (attrs) version;
+    src = pkgs.fetchFromGitHub {
+      owner = "datafusion-contrib";
+      repo = "datafusion-python";
+      rev = attrs.version;
+      sha256 = "sha256-IWqlY4Cfil3cyQqXm+X9ViRYLzmNaiM3+i/7EyV5CK4=";
+    };
+
+    patches = (attrs.patches or [ ])
+      ++ lib.optionals stdenv.isDarwin [ ./patches/datafusion-macos.patch ];
+
     nativeBuildInputs = (attrs.nativeBuildInputs or [ ])
       ++ (with pkgs.rustPlatform; [ cargoSetupHook maturinBuildHook ]);
 
     buildInputs = (attrs.buildInputs or [ ])
       ++ lib.optionals stdenv.isDarwin [ pkgs.libiconv ];
 
     cargoDeps = pkgs.rustPlatform.fetchCargoTarball {
-      inherit (attrs) src;
-      sourceRoot = "${attrs.pname}-${attrs.version}";
-      sha256 = "sha256-SHVJWbQROQVQ9qZDTSvHz/O9irCyEPgcmDowerMPYeI=";
+      inherit src patches;
+      sha256 =
+        if stdenv.isDarwin
+        then "sha256-qDXfSisgQ4qr8Sky0aNns8LldiHYs/N1cNatNlwEE18="
+        else "sha256-bDuCbQYNai/mNrS2BqoW4qe7eLZcBhb7GhsFKn08G/U=";
     };
   });
 
@@ -54,4 +67,10 @@ self: super:
   atpublic = super.atpublic.overridePythonAttrs (attrs: {
     nativeBuildInputs = (attrs.nativeBuildInputs or [ ]) ++ [ self.pdm-pep517 ];
   });
+
+  watchdog = super.watchdog.overrideAttrs (attrs: lib.optionalAttrs
+    (stdenv.isDarwin && lib.versionAtLeast attrs.version "2")
+    {
+      patches = (attrs.patches or [ ]) ++ [ ./patches/watchdog-force-kqueue.patch ];
+    });
 }
diff --git a/poetry.lock b/poetry.lock
diff --git a/pyproject.toml b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ibis-framework"
-version = "3.0.0"
+version = "3.0.1"
 packages = [{ include = "ibis" }]
 homepage = "https://ibis-project.org"
 repository = "https://github.com/ibis-project/ibis"
@@ -83,13 +83,14 @@ mike = ">=1.1.2,<2"
 mkdocs = ">=1.2.3,<2"
 mkdocs-exclude = ">=1.0.2,<2"
 mkdocs-gen-files = ">=0.3.4,<0.4.0"
+mkdocs-git-revision-date-localized-plugin = ">=1.0.1,<2"
 mkdocs-jupyter = ">=0.20.0,<1"
 mkdocs-literate-nav = ">=0.4.1,<1"
 mkdocs-macros-plugin = ">=0.6.3,<1"
 mkdocs-material = ">=8.2.1,<9"
 mkdocs-table-reader-plugin = ">=1.0.0,<2"
 mkdocstrings = ">=0.17.0,<0.18.0"
-mypy = "0.942"
+mypy = "0.950"
 platformdirs = ">=2,<2.5.2"
 pyarrow = ">=1,<8"
 pydocstyle = ">=6.1.1,<7"

diff --git a/setup.py b/setup.py
diff --git a/shell.nix b/shell.nix
@@ -62,15 +62,16 @@ let
   };
   mic = pkgs.writeShellApplication {
     name = "mic";
-    runtimeInputs = [ pythonEnv ];
+    runtimeInputs = [ pythonEnv pkgs.coreutils ];
     text = ''
       # The immediate reason this is necessary is to allow the subprocess
       # invocations of `mkdocs` by `mike` to see Python dependencies.
       #
       # This shouldn't be necessary, but I think the nix wrappers may be
       # indavertently preventing this.
-      export PYTHONPATH
+      export PYTHONPATH TEMPDIR
       PYTHONPATH="$(python -c 'import os, sys; print(os.pathsep.join(sys.path))')"
+      TEMPDIR="$(mktemp -d)"
 
       mike "$@"
     '';