minor cabal file change

psb.cabal

@@ -1,16 +1,4 @@
 cabal-version:      3.4
--- The cabal-version field refers to the version of the .cabal specification,
--- and can be different from the cabal-install (the tool) version and the
--- Cabal (the library) version you are using. As such, the Cabal (the library)
--- version used must be equal or greater than the version stated in this field.
--- Starting from the specification version 2.2, the cabal-version field must be
--- the first thing in the cabal file.
-
--- Initial package description 'psb' generated by
--- 'cabal init'. For further documentation, see:
---   http://haskell.org/cabal/users-guide/
---
--- The name of the package.
 name:               psb
 
 -- The package version.
@@ -22,35 +10,15 @@ name:               psb
 --                  | | | +--- code changes with no API change
 version:            0.1.0.0
 
--- A short (one-line) description of the package.
--- synopsis:
-
--- A longer description of the package.
--- description:
-
--- The license under which the package is released.
 license:            MIT
-
--- The file containing the license text.
 license-file:       LICENSE
 
--- The package author(s).
 author:             Pagwin
-
--- An email address to which users can send suggestions, bug reports, and patches.
 maintainer:         dev@pagwin.xyz
 
--- A copyright notice.
--- copyright:
 category:           Web
 build-type:         Simple
 
--- Extra doc files to be distributed with the package, such as a CHANGELOG or a README.
-extra-doc-files:    CHANGELOG.md
-
--- Extra source files to be distributed with the package, such as examples, or a tutorial module.
--- extra-source-files:
-
 common warnings
     ghc-options: -Wall
 
@@ -61,14 +29,13 @@ executable psb
     -- .hs or .lhs file containing the Main module.
     main-is:          Main.hs
 
-    -- Modules included in this executable, other than Main.
     other-modules: Config Utilities Templates Types
 
-    -- LANGUAGE extensions used by modules in this package.
     default-extensions: ApplicativeDo DataKinds NamedFieldPuns DerivingVia LambdaCase TypeApplications DeriveGeneric
 
     -- Other library packages from which modules are imported.
-    build-depends:    base >=4.17.2.1, mustache >=2.4.2, pandoc >=3.2.1, shake >= 0.19.8, deriving-aeson >= 0.2.9, aeson, text, time, unordered-containers, yaml
+    -- https://hackage.haskell.org/package/texmath
+    build-depends:    base >=4.17.2.1, mustache >=2.4.2, pandoc >=3.2.1, shake >= 0.19.8, deriving-aeson >= 0.2.9, aeson, text, time, unordered-containers, yaml, parsec >= 3.1.18.0
 
     -- Directories containing source files.
     hs-source-dirs:   app