PYTHON and PYTHON3 in cmake export

Generates the following `ydb/library/yql/dq/expr_nodes/CMakeLists.txt`:
```
find_package(Python3)

add_library(yql-dq-expr_nodes INTERFACE)
target_link_libraries(yql-dq-expr_nodes INTERFACE
yutil
yql-core-expr_nodes
)
add_custom_command(
OUTPUT
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.gen.h
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.decl.inl.h
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.defs.inl.h
DEPENDS
${CMAKE_SOURCE_DIR}/ydb/library/yql/core/expr_nodes_gen/yql_expr_nodes_gen.jnj
${CMAKE_SOURCE_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.json
${CMAKE_SOURCE_DIR}/ydb/library/yql/core/expr_nodes_gen/gen/__main__.py
COMMAND
Python3::Interpreter
${CMAKE_SOURCE_DIR}/ydb/library/yql/core/expr_nodes_gen/gen/__main__.py
${CMAKE_SOURCE_DIR}/ydb/library/yql/core/expr_nodes_gen/yql_expr_nodes_gen.jnj
${CMAKE_SOURCE_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.json
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.gen.h
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.decl.inl.h
${CMAKE_BINARY_DIR}/ydb/library/yql/dq/expr_nodes/dq_expr_nodes.defs.inl.h
)

```

ref:845858c868ca9262a974ad49179a9b5489ec2870

3 files changed, 64 insertions, 16 deletions

diff --git a/build/conf/opensource.conf b/build/conf/opensource.conf
index 027f6a3e42..0902d187aa 100644
--- a/build/conf/opensource.conf
+++ b/build/conf/opensource.conf
@@ -1,3 +1,5 @@
+EXPORT_CMAKE=no

+

 when ($CATBOOST_OPENSOURCE == "yes") {

     OPENSOURCE=yes

 }

diff --git a/build/ymake.core.conf b/build/ymake.core.conf
index d43991debe..8971da68b8 100644
--- a/build/ymake.core.conf
+++ b/build/ymake.core.conf
@@ -7040,6 +7040,33 @@ macro LUA(ScriptPath, IN{input}[], OUT{output}[], OUT_NOAUTO{output}[], TOOL{too
 ### ${CURDIR} and ${BINDIR} which are expanded where the outputs are used.
 macro PYTHON(ScriptPath, IN{input}[], OUT{output}[], OUT_NOAUTO{output}[], TOOL{tool}[], OUTPUT_INCLUDES[], IN_DEPS[], STDOUT="", STDOUT_NOAUTO="", CWD="", ENV[], REQUIREMENTS[], Args...) {
     .CMD=${cwd:CWD} ${env:ENV} $YMAKE_PYTHON ${input:ScriptPath} $Args ${input;hide:IN} ${input;hide:IN_DEPS} ${output_include;hide:OUTPUT_INCLUDES} ${tool;hide:TOOL} ${output;hide:OUT} ${output;noauto;hide:OUT_NOAUTO} ${output;stdout:STDOUT} ${output;stdout;noauto:STDOUT_NOAUTO} ${requirements;hide:REQUIREMENTS} ${requirements;hide:"network:restricted"} ${kv;hide:"p PY"} ${kv;hide:"pc yellow"} ${kv;hide:"show_out"}
+    .SEM=find_package Python2 && add_custom_command OUTPUT ${output:OUT} ${output;noauto:OUT_NOAUTO} ${output:STDOUT} ${output;noauto:STDOUT_NOAUTO} DEPENDS ${input:IN} ${input:ScriptPath} ${tool:TOOL} ${pre=WORKING_DIRECTORY :CWD} COMMAND Python2::Interpreter ${input:ScriptPath} $Args ${pre=> :STDOUT} ${pre=> :STDOUT_NOAUTO}
+}
+
+# tag:python-specific
+### @usage: PYTHON3(script_path args... [CWD dir] [ENV key=value...] [TOOL tools...] [IN inputs...] [OUT[_NOAUTO] outputs...] [STDOUT[_NOAUTO] output] [OUTPUT_INCLUDES output_includes...] [REQUIREMENTS reqs])
+###
+### Run a python script with prebuilt python3 interpretor built from devtools/huge_python3.
+### These macros are similar: RUN_PROGRAM, LUA, PYTHON.
+###
+### Parameters:
+### - script_path - Path to the script.
+### - args... - Program arguments. Relative paths listed in TOOL, IN, OUT, STDOUT become absolute.
+### - CWD dir - Absolute path of the working directory.
+### - ENV key=value... - Environment variables.
+### - TOOL tools... - Auxiliary tool directories.
+### - IN inputs... - Input files.
+### - OUT[_NOAUTO] outputs... - Output files. NOAUTO outputs are not automatically added to the build process.
+### - STDOUT[_NOAUTO] output - Redirect the standard output to the output file.
+### - OUTPUT_INCLUDES output_includes... - Includes of the output files that are needed to build them.
+### - REQUIREMENTS - Override default requirements for CPU and RAM
+###
+### For absolute paths use ${ARCADIA_ROOT} and ${ARCADIA_BUILD_ROOT}, or
+### ${CURDIR} and ${BINDIR} which are expanded where the outputs are used.
+macro PYTHON3(ScriptPath, IN{input}[], OUT{output}[], OUT_NOAUTO{output}[], TOOL{tool}[], OUTPUT_INCLUDES[], IN_DEPS[], STDOUT="", STDOUT_NOAUTO="", CWD="", ENV[], REQUIREMENTS[], Args...) {
+    .CMD=${cwd:CWD} ${env:ENV} $YMAKE_PYTHON3 ${input:ScriptPath} $Args ${input;hide:IN} ${input;hide:IN_DEPS} ${output_include;hide:OUTPUT_INCLUDES} ${tool;hide:TOOL} ${output;hide:OUT} ${output;noauto;hide:OUT_NOAUTO} ${output;stdout:STDOUT} ${output;stdout;noauto:STDOUT_NOAUTO} ${requirements;hide:REQUIREMENTS} ${requirements;hide:"network:restricted"} ${kv;hide:"p PY"} ${kv;hide:"pc yellow"} ${kv;hide:"show_out"}
+    .PEERDIR=$YMAKE_PYTHON3_PEER
+    .SEM=find_package Python3 && add_custom_command OUTPUT ${output:OUT} ${output;noauto:OUT_NOAUTO} ${output:STDOUT} ${output;noauto:STDOUT_NOAUTO} DEPENDS ${input:IN} ${input:ScriptPath} ${tool:TOOL} ${pre=WORKING_DIRECTORY :CWD} COMMAND Python3::Interpreter ${input:ScriptPath} $Args ${pre=> :STDOUT} ${pre=> :STDOUT_NOAUTO}
 }
 
 # tag:java-specific
diff --git a/ydb/library/yql/dq/expr_nodes/ya.make b/ydb/library/yql/dq/expr_nodes/ya.make
index 96cfd43f86..ae86d4e4e8 100644
--- a/ydb/library/yql/dq/expr_nodes/ya.make
+++ b/ydb/library/yql/dq/expr_nodes/ya.make
@@ -16,21 +16,40 @@ SRCDIR(
     ydb/library/yql/core/expr_nodes_gen
 )
 
-RUN_PROGRAM(
-    ydb/library/yql/core/expr_nodes_gen/gen
-    yql_expr_nodes_gen.jnj
-    dq_expr_nodes.json
-    dq_expr_nodes.gen.h
-    dq_expr_nodes.decl.inl.h
-    dq_expr_nodes.defs.inl.h
-    IN yql_expr_nodes_gen.jnj
-    IN dq_expr_nodes.json
-    OUT dq_expr_nodes.gen.h
-    OUT dq_expr_nodes.decl.inl.h
-    OUT dq_expr_nodes.defs.inl.h
-    OUTPUT_INCLUDES
-    ${ARCADIA_ROOT}/ydb/library/yql/core/expr_nodes_gen/yql_expr_nodes_gen.h
-    ${ARCADIA_ROOT}/util/generic/hash_set.h
-)
+IF(EXPORT_CMAKE)
+    PYTHON3(
+        ${ARCADIA_ROOT}/ydb/library/yql/core/expr_nodes_gen/gen/__main__.py
+        yql_expr_nodes_gen.jnj
+        dq_expr_nodes.json
+        dq_expr_nodes.gen.h
+        dq_expr_nodes.decl.inl.h
+        dq_expr_nodes.defs.inl.h
+        IN yql_expr_nodes_gen.jnj
+        IN dq_expr_nodes.json
+        OUT dq_expr_nodes.gen.h
+        OUT dq_expr_nodes.decl.inl.h
+        OUT dq_expr_nodes.defs.inl.h
+        OUTPUT_INCLUDES
+        ${ARCADIA_ROOT}/ydb/library/yql/core/expr_nodes_gen/yql_expr_nodes_gen.h
+        ${ARCADIA_ROOT}/util/generic/hash_set.h
+    )
+ELSE()
+    RUN_PROGRAM(
+        ydb/library/yql/core/expr_nodes_gen/gen
+        yql_expr_nodes_gen.jnj
+        dq_expr_nodes.json
+        dq_expr_nodes.gen.h
+        dq_expr_nodes.decl.inl.h
+        dq_expr_nodes.defs.inl.h
+        IN yql_expr_nodes_gen.jnj
+        IN dq_expr_nodes.json
+        OUT dq_expr_nodes.gen.h
+        OUT dq_expr_nodes.decl.inl.h
+        OUT dq_expr_nodes.defs.inl.h
+        OUTPUT_INCLUDES
+        ${ARCADIA_ROOT}/ydb/library/yql/core/expr_nodes_gen/yql_expr_nodes_gen.h
+        ${ARCADIA_ROOT}/util/generic/hash_set.h
+    )
+ENDIF()
 
 END()