Missing Dependencies for Web Mode When Installing Glances with Homebrew

[gromdimon]

Describe the bug
The problem occurs when installing Glances through Homebrew on macOS: essential dependencies required for running Glances in web server mode (glances -w) are not installed automatically. When trying to start web mode, an import error appears because FastAPI, Uvicorn, and Jinja2 are missing. This requires manual installation of these dependencies in the specific Python environment Glances uses, which should ideally be handled during installation.

To Reproduce

1. Install Glances via Homebrew:

brew install glances

2. Try starting Glances in web server mode:

glances -w

3. You will encounter an error similar to:

FastAPI import error: No module named 'fastapi'
Glances cannot start in web server mode.

Expected behavior
Glances should automatically install the necessary dependencies for web mode (fastapi, uvicorn, jinja2) when using brew install glances so that glances -w runs without error after installation.

Environement (please complete the following information)

• Operating System (lsb_release -a or OS name/version):

ProductName:		macOS
ProductVersion:		15.0.1
BuildVersion:		24A348

• Glances & psutil versions: To be completed with result of: glances -V

Glances version:	4.2.1
Glances API version:	4
PsUtil version:		6.1.0

• How do you install Glances (Pypi package, script, package manager, source): To be completed

brew install glances

• Glances test: To be completed with result of: glances --issue

glances --issue
===============================================================================
Glances 4.2.1 (/opt/homebrew/Cellar/glances/4.2.1/libexec/lib/python3.13/site-packages/glances/__init__.py)
Python 3.13.0 (/opt/homebrew/Cellar/glances/4.2.1/libexec/bin/python)
PsUtil 6.1.0 (/opt/homebrew/Cellar/glances/4.2.1/libexec/lib/python3.13/site-packages/psutil/__init__.py)
===============================================================================
alert         [OK]    0.00003s 
[]
amps          [OK]    0.00010s 
[]
cloud         [OK]    0.00004s 
{}
connections   [OK]    0.00224s 
{'net_connections_enabled': False, 'nf_conntrack_enabled': True}
containers    [OK]    0.00003s 
{}
core          [OK]    0.00004s 
{'log': 8, 'phys': 8}
cpu           [OK]    0.00022s 
{'cpucore': 8,
'ctx_switches': 0,
'ctx_switches_gauge': 13507,
'idle': 97.1,
'interrupts': 0,
'interrupts_gauge': 82545,
'nice': 0.0,
'soft_interrupts': 0,
'soft_interrupts_gauge': 16375290,
'syscalls': 0,
'syscalls_gauge': 120500,
'system': 1.3,
'time_since_update': 2.0582940578460693,
'total': 2.9,
'user': 1.6}
diskio        [OK]    0.00099s key=disk_name 
[{'disk_name': 'disk0',
 'key': 'disk_name',
 'read_bytes': 0,
 'read_bytes_gauge': 104481124352,
 'read_count': 0,
 'read_count_gauge': 3948962,
 'time_since_update': 2.059825897216797,
 'write_bytes': 0,
 'write_bytes_gauge': 34578247680,
 'write_count': 0,
 'write_count_gauge': 1107947}, ...]
folders       [OK]    0.00003s 
[]
fs            [OK]    0.00059s key=mnt_point 
[{'device_name': '/dev/disk3s1s1',
 'free': 113901592576,
 'fs_type': 'apfs',
 'key': 'mnt_point',
 'mnt_point': '/',
 'percent': 11.2,
 'size': 245107195904,
 'used': 14418989056}, ...]
gpu           [OK]    0.00004s 
[]
help          [OK]    0.00000s 
None
ip            [OK]    0.00002s 
{}
irq           [OK]    0.00002s 
[]
load          [OK]    0.00004s 
{'cpucore': 8, 'min1': 1.84423828125, 'min15': 1.57470703125, 'min5': 1.66748046875}
mem           [OK]    0.00006s 
{'active': 2128216064,
'available': 2195668992,
'free': 2195668992,
'inactive': 1975255040,
'percent': 74.4,
'total': 8589934592,
'used': 6394265600,
'wired': 1366261760}
memswap       [OK]    0.00006s 
{'free': 1552023552,
'percent': 27.7,
'sin': 52574961664,
'sout': 762445824,
'time_since_update': 2.062190055847168,
'total': 2147483648,
'used': 595460096}
network       [OK]    0.00189s key=interface_name 
[{'alias': None,
 'bytes_all': 0,
 'bytes_all_gauge': 5648384,
 'bytes_all_rate_per_sec': 0.0,
 'bytes_recv': 0,
 'bytes_recv_gauge': 2824192,
 'bytes_recv_rate_per_sec': 0.0,
 'bytes_sent': 0,
 'bytes_sent_gauge': 2824192,
 'bytes_sent_rate_per_sec': 0.0,
 'interface_name': 'lo0',
 'key': 'interface_name',
 'speed': 0,
 'time_since_update': 2.0128469467163086}, ...]
now           [OK]    0.00004s 
{'custom': '2024-11-15 12:28:56 +07', 'iso': '2024-11-15T12:28:56+07:00'}
percpu        [OK]    0.00022s key=cpu_number 
[{'cpu_number': 0,
 'dpc': None,
 'guest': None,
 'guest_nice': None,
 'idle': 92.7,
 'interrupt': None,
 'iowait': None,
 'irq': None,
 'key': 'cpu_number',
 'nice': 0.0,
 'softirq': None,
 'steal': None,
 'system': 3.9,
 'total': 7.3,
 'user': 3.4}, ...]
ports         [OK]    0.00026s 
[]
processcount  [OK]    0.04004s 
{'pid_max': 0, 'running': 569, 'sleeping': 0, 'thread': 1679, 'total': 569}
processlist   [OK]    0.00016s 
[]
psutilversion [OK]    0.00001s 
'6.1.0'
quicklook     [OK]    0.00006s 
{'cpu': 2.9,
'cpu_hz': 3504000000.0,
'cpu_hz_current': 3504000000.0,
'cpu_log_core': 8,
'cpu_name': 'CPU',
'cpu_phys_core': 8,
'load': 19.7,
'mem': 74.6,
'percpu': [{...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}],
'swap': 27.7}
raid          [OK]    0.00001s 
{}
sensors       [OK]    0.00000s key=label 
[{'key': 'label',
 'label': 'Battery',
 'status': 'Charging',
 'type': <SensorType.BATTERY: 'battery'>,
 'unit': '%',
 'value': 93}, ...]
smart         [NA]
system        [OK]    0.00000s 
{'hostname': 'Dzmitrys-MacBook-Air.local',
'hr_name': 'Darwin 15.0.1 64bit',
'os_name': 'Darwin',
'os_version': '15.0.1',
'platform': '64bit'}
uptime        [OK]    0.00002s 
{'seconds': 16408}
version       [OK]    0.00001s 
'4.2.1'
vms           [OK]    0.00002s 
[]
wifi          [OK]    0.00001s 
[]
===============================================================================
Total time to update all stats: 0.04961s
===============================================================================

[nicolargo]

Hi @gromdimon

i close this issue because it is duplicated as #3012

[gromdimon]

@nicolargo, thank you for the quick response! Apologies for opening the duplicate issues (I didn’t check the closed tickets, as the bug didn’t seem to be fixed).

[nicolargo]

No problem. Hope thé bug will be fixed by the package manager.