[BUG] Install Issue

### Pre-flight checklist

- [x] I have searched existing issues and this is not a duplicate.
- [x] I have read the [Contributing Guidelines](https://github.com/CachyOS/linux-cachyos/blob/master/CONTRIBUTING.md).
- [x] I have verified the issue is reproducible with the latest available CachyOS kernel.
- [x] I have tried to reproduce the issue on Arch Linux's `linux` kernel.

### Upstream / vanilla kernel check

I tested with a vanilla/upstream kernel and the issue does NOT reproduce there (CachyOS-specific bug)

### Kernel variant

linux-cachyos (EEVDF, Clang)

### System information (cachyos-bugreport.sh)

```text
https://paste.cachyos.org/p/ba57971.log
```

### Manual system information (if cachyos-bugreport.sh is unavailable)

```text

```

### Bug description

Kernel Updates/Upgrades **do not clear* the old modules folder from `/usr/lib/modules`.

This results in DKMS building for those versions as well, when it should not do so.

### Steps to reproduce

Update CachyOS provided Kernel.

### Expected behavior

Only have the corresponding versions folder under `/usr/lib/modules`

### Actual behavior

I had leftover kernel module folders not matching the installed version:

`/usr/lib/modules/7.1.3-2-cachyos/`
`/usr/lib/modules/7.1.6-1-cachyos/`

### Logs / stack traces

```text

```

### Additional system information

```Fish
System:
Kernel: 7.1.8-1-cachyos arch: x86_64 bits: 64 compiler: clang v: 22.1.8
clocksource: tsc
Desktop: niri v: N/A vt: 1 lm: 1: greetd 2: seatd v: 0.9.3 Distro: CachyOS
base: Arch Linux
Machine:
Type: Laptop System: HP product: HP ProBook 450 15.6 inch G9 Notebook PC
v: SBKPFV3 serial: Chassis: type: 10
serial:
Mobo: HP model: 8978 v: KBC Version 07.76.00 serial:
part-nu: 6Y7N8UP#ABA uuid: Firmware: UEFI vendor: HP
v: U72 Ver. 01.18.01 date: 05/04/2026
Battery:
ID-1: BAT0 charge: 36.4 Wh (99.7%) condition: 36.5/51.3 Wh (71.1%)
volts: 12.42 min: 11.58 model: Hewlett-Packard Primary type: Li-ion
serial: charging: status: not charging cycles: 228
CPU:
Info: 6-core (2-mt/4-st) model: 12th Gen Intel Core i3-1215U bits: 64
type: MST AMCP smt: enabled arch: Alder Lake rev: 4 cache: L1: 544 KiB
L2: 4.5 MiB L3: 10 MiB
Speed (MHz): avg: 436 min/max: 400/4400:3300 cores: 1: 436 2: 436 3: 436
4: 436 5: 436 6: 436 7: 436 8: 436 bogomips: 39936
Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Alder Lake-UP3 GT1 [UHD Graphics] vendor: Hewlett-Packard
driver: xe v: kernel arch: Xe ports: active: eDP-1 empty: DP-1, DP-2, DP-3,
DP-4, HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:46b3 class-ID: 0300
Device-2: Quanta HP HD Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 bus-ID: 3-1:2 chip-ID: 0408:5483 class-ID: fe01
serial:
Display: wayland server: Xwayland v: 24.1.13 compositor: niri driver: X:
loaded: modesetting unloaded: vesa alternate: fbdev,intel dri: iris gpu: xe
display-ID: 1
Monitor-1: eDP-1 model: ChiMei InnoLux 0x1512 res: mode: 1920x1080 hz: 60
scale: 100% (1) dpi: 142 size: 344x193mm (13.54x7.6") diag: 394mm (15.5")
modes: 1920x1080
API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris wayland:
drv: iris x11: drv: iris
API: OpenGL v: 4.6 vendor: intel mesa v: 26.1.6-arch3.1 glx-v: 1.4
direct-render: yes renderer: Mesa Intel Graphics (ADL GT2)
device-ID: 8086:46b3
API: Vulkan v: 1.4.357 layers: 8 surfaces: N/A device: 0
type: integrated-gpu driver: mesa intel device-ID: 8086:46b3
Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo gpu: gputop,
intel_gpu_top, lsgpu wl: nwg-displays,wlr-randr x11: xdriinfo, xdpyinfo,
xprop, xrandr
Audio:
Device-1: Intel Alder Lake PCH-P High Definition Audio
vendor: Hewlett-Packard driver: sof-audio-pci-intel-tgl bus-ID: 00:1f.3
chip-ID: 8086:51c8 class-ID: 0401
API: ALSA v: k7.1.8-1-cachyos status: kernel-api
Server-1: sndiod v: N/A status: off
Server-2: PipeWire v: 1.6.8 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin
Network:
Device-1: Realtek RTL8852BE PCIe 802.11ax Wireless Network
vendor: Hewlett-Packard driver: rtw89_8852be v: kernel pcie: speed: 2.5 GT/s
lanes: 1 port: 4000 bus-ID: 03:00.0 chip-ID: 10ec:b852 class-ID: 0280
IF: wlp3s0 state: up mac:
Device-2: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
vendor: Hewlett-Packard driver: r8169 v: kernel pcie: speed: 2.5 GT/s
lanes: 1 port: 3000 bus-ID: 04:00.0 chip-ID: 10ec:8168 class-ID: 0200
IF: enp4s0 state: down mac:
Bluetooth:
Device-1: Realtek Bluetooth Radio driver: btusb v: 0.8 type: USB rev: 1.0
speed: 12 Mb/s lanes: 1 bus-ID: 3-10:3 chip-ID: 0bda:b85c class-ID: e001
serial:
Report: btmgmt ID: hci0 rfk-id: 1 state: up address: bt-v: 5.2
lmp-v: 11 class-ID: 6c010c
Drives:
Local Storage: total: 238.47 GiB used: 139.52 GiB (58.5%)
ID-1: /dev/nvme0n1 vendor: KIOXIA model: N/A size: 238.47 GiB
speed: 63.2 Gb/s lanes: 4 tech: SSD serial: fw-rev: HP02AN00
temp: 33.9 C scheme: GPT
Partition:
ID-1: / size: 237.47 GiB used: 139.3 GiB (58.7%) fs: f2fs
dev: /dev/nvme0n1p2
ID-2: /boot size: 1022 MiB used: 231.3 MiB (22.6%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
ID-1: swap-1 type: zram size: 15.25 GiB used: 1.3 MiB (0.0%) priority: 100
dev: /dev/zram0
Sensors:
System Temperatures: cpu: 58.0 C mobo: N/A
Fan Speeds (rpm): N/A
Info:
Memory: total: 16 GiB note: est. available: 15.25 GiB used: 6.08 GiB (39.8%)
Processes: 350 Power: uptime: 7m states: freeze,mem,disk suspend: s2idle
wakeups: 0 hibernate: platform Init: systemd v: 261 default: graphical
Packages: 2349 pm: pacman pkgs: 2336 pm: flatpak pkgs: 13 Compilers:
clang: 22.1.8 gcc: 16.2.1 Shell: fish v: 4.8.1 running-in: kitty
inxi: 3.3.41
```