Can't Install watchman on macOS big sur M1

[EmmanuelObua]

Terminal Results

brew install watchman
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (shivammathur/php and homebrew/core).
==> Updated Formulae
Updated 1 formula.

Error: watchman dependencies not built for the arm64 CPU architecture:
  [email protected] was built for x86_64

Any help on this shall be appreciated

[SMillerDev]

what do brew doctor and brew config say?

[carlocab]

Also brew info [email protected].

[EmmanuelObua]

brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  [email protected]

Warning: "config" scripts exist outside your system or Homebrew directories.
`./configure` scripts often look for *-config scripts to determine if
software packages are installed, and which additional flags to use when
compiling and linking.

Having additional scripts in your path can confuse software installed via
Homebrew if the config script overrides a system or Homebrew-provided
script of the same name. We found the following "config" scripts:
  /usr/local/bin/python3.9-config
  /usr/local/bin/python3-config
  /Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9-config
  /Library/Frameworks/Python.framework/Versions/3.9/bin/python3-config

Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
  /usr/local/lib/libcrypto.1.1.dylib
  /usr/local/lib/libgflags.2.2.dylib
  /usr/local/lib/libglog.0.dylib
  /usr/local/lib/libsodium.23.dylib
  /usr/local/lib/libssl.1.1.dylib
  /usr/local/lib/libtcl8.6.dylib
  /usr/local/lib/libtk8.6.dylib

Warning: Unbrewed header files were found in /usr/local/include.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected header files:
  /usr/local/include/fakemysql.h
  /usr/local/include/fakepq.h
  /usr/local/include/fakesql.h
  /usr/local/include/itcl.h
  /usr/local/include/itcl2TclOO.h
  /usr/local/include/itclDecls.h
  /usr/local/include/itclInt.h
  /usr/local/include/itclIntDecls.h
  /usr/local/include/itclMigrate2TclCore.h
  /usr/local/include/itclTclIntStubsFcn.h
  /usr/local/include/mysqlStubs.h
  /usr/local/include/odbcStubs.h
  /usr/local/include/pqStubs.h
  /usr/local/include/tcl.h
  /usr/local/include/tclDecls.h
  /usr/local/include/tclOO.h
  /usr/local/include/tclOODecls.h
  /usr/local/include/tclPlatDecls.h
  /usr/local/include/tclThread.h
  /usr/local/include/tclTomMath.h
  /usr/local/include/tclTomMathDecls.h
  /usr/local/include/tdbc.h
  /usr/local/include/tdbcDecls.h
  /usr/local/include/tdbcInt.h
  /usr/local/include/tk.h
  /usr/local/include/tkDecls.h
  /usr/local/include/tkPlatDecls.h

Warning: Unbrewed '.pc' files were found in /usr/local/lib/pkgconfig.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected '.pc' files:
  /usr/local/lib/pkgconfig/tcl.pc
  /usr/local/lib/pkgconfig/tk.pc

Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
  /usr/local/lib/libtclstub8.6.a
  /usr/local/lib/libtkstub8.6.a

Warning: Your Homebrew's prefix is not /usr/local.
Some of Homebrew's bottles (binary packages) can only be used with the default
prefix (/usr/local).
You will encounter build failures with some formulae.
Please create pull requests instead of asking for help on Homebrew's GitHub,
Twitter or any other official channels. You are responsible for resolving
any issues you experience while you are running this
unsupported configuration.

brew config

HOMEBREW_VERSION: 3.1.1
ORIGIN: https://github.com/Homebrew/brew
HEAD: dc3e8b485a166a73d6463320d9deaba6236f747c
Last commit: 3 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: a9fe5265ae56d3adbe0e1816168858f8609f3364
Core tap last commit: 2 days ago
Core tap branch: master
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_REPOSITORY: /opt/homebrew
HOMEBREW_CELLAR: /opt/homebrew/Cellar
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 2.6.3 => /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby
CPU: octa-core 64-bit westmere
Clang: 12.0 build 1200
Git: 2.24.3 => /Applications/Xcode.app/Contents/Developer/usr/bin/git
Curl: 7.64.1 => /usr/bin/curl
macOS: 11.0.1-x86_64
CLT: 12.4.0.0.1.1610135815
Xcode: 12.4
Rosetta 2: true

[EmmanuelObua]

brew info [email protected].

[email protected]: stable 3.9.4
Interpreted, interactive, object-oriented programming language
https://www.python.org/
/opt/homebrew/Cellar/[email protected]/3.9.1_8 (3,971 files, 67.0MB) *
  Poured from bottle on 2021-02-14 at 13:57:02
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/[email protected]
License: Python-2.0
==> Dependencies
Build: pkg-config ✘
Required: gdbm ✘, mpdecimal ✘, [email protected] ✘, readline ✔, sqlite ✘, xz ✔
==> Caveats
Python has been installed as
  /opt/homebrew/bin/python3

Unversioned symlinks `python`, `python-config`, `pip` etc. pointing to
`python3`, `python3-config`, `pip3` etc., respectively, have been installed into
  /opt/homebrew/opt/[email protected]/libexec/bin

You can install Python packages with
  pip3 install <package>
They will install into the site-package directory
  /opt/homebrew/lib/python3.9/site-packages

tkinter is no longer included with this formula, but it is available separately:
  brew install [email protected]

See: https://docs.brew.sh/Homebrew-and-Python
==> Analytics
install: 842,413 (30 days), 2,307,144 (90 days), 4,728,972 (365 days)
install-on-request: 280,283 (30 days), 776,267 (90 days), 1,386,699 (365 days)
build-error: 0 (30 days)

[SMillerDev]

Are you running brew in a rosetta based terminal?

[EmmanuelObua]

Yes.