This is a subset of the main Rust blog listing only official release announcement posts.
Did you know? There are convenient redirects for
the latest and specific release posts:
• /releases/latest
• /releases/1.85.0
cabal get gtools This fetches the tarball and extracts it into a directory named gtools-x.y.z . This is the closest to a literal operation. Step 3: Download and Build (Install Locally) To actually install the library so you can use it in your projects:
Compile and run:
cabal --version # Output: cabal-install version 3.10.1.0 The typical cabal workflow involves updating your package list, then downloading and building gtools . Step 1: Update the Package Index cabal update This command downloads the latest list of packages from Hackage (Haskell’s central package repository). Step 2: Download Gtools Source (Without Installing) If you only want to download the source code without building it: gtools cabal download
cabal list --installed cabal list gtools # searches Hackage If nothing appears, the package may be from a different ecosystem or a private repository. Cause: Your GHC version is too old or too new for the gtools version you’re trying to install. Fix: Use cabal install gtools --allow-older or switch GHC versions via ghcup . Error 3: "Cabal: Failed to build gtools: Missing foreign library" Some gtools versions depend on C libraries (e.g., gsl , blas ). Install them system-wide:
In this comprehensive guide, we will demystify the process of downloading and installing gtools using cabal , troubleshoot common errors, and explore best practices for managing dependencies. Before diving into the installation command, let’s clarify what gtools actually is. In other languages (like R), "gtools" refers to a collection of functions for programming and data analysis. In Haskell, gtools is a less common but specialized package —often confused with GHC-tools or g-tools for graph processing. cabal get gtools This fetches the tarball and
If the gtools you need is not on Hackage, it might be a private or legacy package. In that case, you’ll need to use cabal in a different way (e.g., pointing to a Git repo). The gtools cabal download command is not a standalone command. Instead, you use cabal to download, build, and install the package. Here’s what you need first: 1. Install GHC (Glasgow Haskell Compiler) # On Ubuntu/Debian sudo apt install ghc On macOS (using Homebrew) brew install ghc On Windows (using Chocolatey) choco install ghc 2. Install Cabal (the build tool) # Using your distro's package manager (often outdated) sudo apt install cabal-install Recommended: Use ghcup (Haskell toolchain manager) curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh ghcup install cabal latest
cabal install gtools --lib The --lib flag ensures the library is registered globally for GHC. Step 1: Update the Package Index cabal update
import Data.GTools.Statistics (permutationTest) import Data.GTools.Sorting (mixedsort) main :: IO () main = do let result = permutationTest [1,2,3] [4,5,6] print result