Can't install sage-numerical-backends-gurobi

I'm trying to install sage-numerical-backends-gurobi with the command "sage -python -m pip install sage-numerical-backends-gurobi", but I get the following error:

ERROR: Command errored out with exit status 1:
command: /opt/sagemath-9.2/local/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"'; __file__='"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-zabprplp
cwd: /tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/
Complete output (43 lines):
GUROBI_HOME is not set, or it does not point to a directory with a Gurobi installation. Trying to link against -lgurobi
Checking whether HAVE_SAGE_CPYTHON_STRING...
Checking whether HAVE_ADD_COL_UNTYPED_ARGS...
Using compile_time_env: {'HAVE_SAGE_CPYTHON_STRING': True, 'HAVE_ADD_COL_UNTYPED_ARGS': True}
running bdist_wheel
running build
running build_py
creating build
creating build/lib.cygwin-3.1.7-x86_64-3.7
creating build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
copying sage_numerical_backends_gurobi/__init__.py -> build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
copying sage_numerical_backends_gurobi/gurobi_backend.pxd -> build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
running build_ext
building 'sage_numerical_backends_gurobi.gurobi_backend' extension
creating build/temp.cygwin-3.1.7-x86_64-3.7
creating build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -ggdb -O2 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector-strong --param=ssp-buffer-size=4 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/build=/usr/src/debug/python37-3.7.7-1 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/src/Python-3.7.7=/usr/src/debug/python37-3.7.7-1 -ggdb -O2 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector-strong --param=ssp-buffer-size=4 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/build=/usr/src/debug/python37-3.7.7-1 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/src/Python-3.7.7=/usr/src/debug/python37-3.7.7-1 -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/sage/cpython -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/cysignals -I/opt/sagemath-9.2/local/lib/python3.7/site-packages -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/sage/ext -I/usr/include/python3.7m -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/numpy/core/include -IC:\Users\*****\win64/include -I/opt/sagemath-9.2/local/include -I/usr/include/python3.7m -c sage_numerical_backends_gurobi/gurobi_backend.c -o build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.o
In file included from sage_numerical_backends_gurobi/gurobi_backend.c:648:
C:\Users\*****\win64/include/gurobi_c.h:25: warning: "__cdecl" redefined
25 | #define __cdecl
|
<built-in>: note: this is the location of the previous definition
In file included from sage_numerical_backends_gurobi/gurobi_backend.c:648:
C:\Users\*****\win64/include/gurobi_c.h:26: warning: "__stdcall" redefined
26 | #define __stdcall
|
<built-in>: note: this is the location of the previous definition
sage_numerical_backends_gurobi/gurobi_backend.c:13545:18: warning: ‘__pyx_pw_4sage_7cpython_6string_3str_to_bytes’ defined but not used [-Wunused-function]
13545 | static PyObject *__pyx_pw_4sage_7cpython_6string_3str_to_bytes(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13544:13: warning: ‘__pyx_doc_4sage_7cpython_6string_2str_to_bytes’ defined but not used [-Wunused-variable]
13544 | static char __pyx_doc_4sage_7cpython_6string_2str_to_bytes[] = "\n Convert ``str`` or ``unicode`` to ``bytes``.\n\n It encodes the given ``str`` to a Python 3 ``bytes``\n using the specified encoding. It is a no-op on ``bytes`` input.\n\n EXAMPLES::\n\n sage: from sage.cpython.string import str_to_bytes\n sage: bs = [str_to_bytes(u'\317\200')]\n sage: all(b == b'\\xcf\\x80' for b in bs)\n True\n sage: str_to_bytes([])\n Traceback (most recent call last):\n ...\n TypeError: expected str... list found\n ";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13340:18: warning: ‘__pyx_pw_4sage_7cpython_6string_1bytes_to_str’ defined but not used [-Wunused-function]
13340 | static PyObject *__pyx_pw_4sage_7cpython_6string_1bytes_to_str(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13339:13: warning: ‘__pyx_doc_4sage_7cpython_6string_bytes_to_str’ defined but not used [-Wunused-variable]
13339 | static char __pyx_doc_4sage_7cpython_6string_bytes_to_str[] = "\n Convert ``bytes`` to ``str``.\n\n This decodes the given ``bytes`` to a Python 3 unicode ``str`` using\n the specified encoding. It is a no-op on ``str`` input.\n\n EXAMPLES::\n\n sage: from sage.cpython.string import bytes_to_str\n sage: s = bytes_to_str(b'\\xcf\\x80')\n sage: s == u'\317\200'\n True\n sage: bytes_to_str([])\n Traceback (most recent call last):\n ...\n TypeError: expected bytes, list found\n ";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc -shared -Wl,--enable-auto-image-base -L/opt/sagemath-9.2/local/lib -Wl,-rpath,/opt/sagemath-9.2/local/lib build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.o -LC:\Users\*****\win64/lib -L/opt/sagemath-9.2/local/lib/python3.7/config -L/usr/lib -LC:\Users\*****\win64/lib -lgurobi -lpython3.7m -o build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.cpython-37m-x86_64-cygwin.dll -lpari
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld: cannot find -lgurobi
collect2: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Failed building wheel for sage-numerical-backends-gurobi
Running setup.py clean for sage-numerical-backends-gurobi
Failed to build sage-numerical-backends-gurobi
Installing collected packages: sage-numerical-backends-gurobi
Running setup.py install for sage-numerical-backends-gurobi ... error
ERROR: Command errored out with exit status 1:
command: /opt/sagemath-9.2/local/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"'; __file__='"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-o3p7kq7j/install-record.txt --single-version-externally-managed --compile --install-headers /opt/sagemath-9.2/local/include/site/python3.7/sage-numerical-backends-gurobi
cwd: /tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/
Complete output (43 lines):
GUROBI_HOME is not set, or it does not point to a directory with a Gurobi installation. Trying to link against -lgurobi
Checking whether HAVE_SAGE_CPYTHON_STRING...
Checking whether HAVE_ADD_COL_UNTYPED_ARGS...
Using compile_time_env: {'HAVE_SAGE_CPYTHON_STRING': True, 'HAVE_ADD_COL_UNTYPED_ARGS': True}
running install
running build
running build_py
creating build
creating build/lib.cygwin-3.1.7-x86_64-3.7
creating build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
copying sage_numerical_backends_gurobi/__init__.py -> build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
copying sage_numerical_backends_gurobi/gurobi_backend.pxd -> build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
running build_ext
building 'sage_numerical_backends_gurobi.gurobi_backend' extension
creating build/temp.cygwin-3.1.7-x86_64-3.7
creating build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi
gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -ggdb -O2 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector-strong --param=ssp-buffer-size=4 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/build=/usr/src/debug/python37-3.7.7-1 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/src/Python-3.7.7=/usr/src/debug/python37-3.7.7-1 -ggdb -O2 -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector-strong --param=ssp-buffer-size=4 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/build=/usr/src/debug/python37-3.7.7-1 -fdebug-prefix-map=/cygdrive/d/cyg_pub/devel/python/python37/python37-3.7.7-1.x86_64/src/Python-3.7.7=/usr/src/debug/python37-3.7.7-1 -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/sage/cpython -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/cysignals -I/opt/sagemath-9.2/local/lib/python3.7/site-packages -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/sage/ext -I/usr/include/python3.7m -I/opt/sagemath-9.2/local/lib/python3.7/site-packages/numpy/core/include -IC:\Users\*****\win64/include -I/opt/sagemath-9.2/local/include -I/usr/include/python3.7m -c sage_numerical_backends_gurobi/gurobi_backend.c -o build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.o
In file included from sage_numerical_backends_gurobi/gurobi_backend.c:648:
C:\Users\*****\win64/include/gurobi_c.h:25: warning: "__cdecl" redefined
25 | #define __cdecl
|
<built-in>: note: this is the location of the previous definition
In file included from sage_numerical_backends_gurobi/gurobi_backend.c:648:
C:\Users\*****\win64/include/gurobi_c.h:26: warning: "__stdcall" redefined
26 | #define __stdcall
|
<built-in>: note: this is the location of the previous definition
sage_numerical_backends_gurobi/gurobi_backend.c:13545:18: warning: ‘__pyx_pw_4sage_7cpython_6string_3str_to_bytes’ defined but not used [-Wunused-function]
13545 | static PyObject *__pyx_pw_4sage_7cpython_6string_3str_to_bytes(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13544:13: warning: ‘__pyx_doc_4sage_7cpython_6string_2str_to_bytes’ defined but not used [-Wunused-variable]
13544 | static char __pyx_doc_4sage_7cpython_6string_2str_to_bytes[] = "\n Convert ``str`` or ``unicode`` to ``bytes``.\n\n It encodes the given ``str`` to a Python 3 ``bytes``\n using the specified encoding. It is a no-op on ``bytes`` input.\n\n EXAMPLES::\n\n sage: from sage.cpython.string import str_to_bytes\n sage: bs = [str_to_bytes(u'\317\200')]\n sage: all(b == b'\\xcf\\x80' for b in bs)\n True\n sage: str_to_bytes([])\n Traceback (most recent call last):\n ...\n TypeError: expected str... list found\n ";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13340:18: warning: ‘__pyx_pw_4sage_7cpython_6string_1bytes_to_str’ defined but not used [-Wunused-function]
13340 | static PyObject *__pyx_pw_4sage_7cpython_6string_1bytes_to_str(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sage_numerical_backends_gurobi/gurobi_backend.c:13339:13: warning: ‘__pyx_doc_4sage_7cpython_6string_bytes_to_str’ defined but not used [-Wunused-variable]
13339 | static char __pyx_doc_4sage_7cpython_6string_bytes_to_str[] = "\n Convert ``bytes`` to ``str``.\n\n This decodes the given ``bytes`` to a Python 3 unicode ``str`` using\n the specified encoding. It is a no-op on ``str`` input.\n\n EXAMPLES::\n\n sage: from sage.cpython.string import bytes_to_str\n sage: s = bytes_to_str(b'\\xcf\\x80')\n sage: s == u'\317\200'\n True\n sage: bytes_to_str([])\n Traceback (most recent call last):\n ...\n TypeError: expected bytes, list found\n ";
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc -shared -Wl,--enable-auto-image-base -L/opt/sagemath-9.2/local/lib -Wl,-rpath,/opt/sagemath-9.2/local/lib build/temp.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.o -LC:\Users\*****\win64/lib -L/opt/sagemath-9.2/local/lib/python3.7/config -L/usr/lib -LC:\Users\*****\win64/lib -lgurobi -lpython3.7m -o build/lib.cygwin-3.1.7-x86_64-3.7/sage_numerical_backends_gurobi/gurobi_backend.cpython-37m-x86_64-cygwin.dll -lpari
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld: cannot find -lgurobi
collect2: error: ld returned 1 exit status
error: command 'gcc' failed with exit status 1
----------------------------------------
ERROR: Command errored out with exit status 1: /opt/sagemath-9.2/local/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"'; __file__='"'"'/tmp/pip-install-tfjrz_p6/sage-numerical-backends-gurobi_94f82cc54df841f6b5b02b3b493c34b3/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-o3p7kq7j/install-record.txt --single-version-externally-managed --compile --install-headers /opt/sagemath-9.2/local/include/site/python3.7/sage-numerical-backends-gurobi Check the logs for full command output.

It says "GUROBI_HOME is not set, or it does not point to a directory with a Gurobi installation", but that's not true.