Add generate function

.JuliaFormatter.toml

@@ -1,3 +1,4 @@
 # See https://domluna.github.io/JuliaFormatter.jl/stable/ for a list of options
 style = "blue"
+ignore = ["templates"]
 indent = 2

.pre-commit-config.yaml

@@ -0,0 +1,13 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.5.0
+  hooks:
+  - id: check-merge-conflict
+  - id: check-toml
+  - id: check-yaml
+  - id: end-of-file-fixer
+    exclude_types: [markdown]  # incompatible with Literate.jl
+- repo: https://github.com/qiaojunfeng/pre-commit-julia-format
+  rev: v0.2.0
+  hooks:
+  - id: julia-format

Project.toml

@@ -3,8 +3,18 @@ uuid = "3d388ab1-018a-49f4-ae50-18094d5f71ea"
 authors = ["ITensor developers <support@itensor.org> and contributors"]
 version = "0.1.0"
 
+[deps]
+Git = "d7ba0133-e1db-5d97-8f8c-041e4b3a1eb2"
+Git_jll = "f8c6e375-362e-5223-8a59-34ff63f689eb"
+PkgSkeleton = "d254efa0-af53-535e-b7f1-03c1c9fbcbe7"
+Preferences = "21216c6a-2e73-6563-6e65-726566657250"
+
 [compat]
 Aqua = "0.8.9"
+Git = "1.3.1"
+Git_jll = "2.46.2"
+PkgSkeleton = "1.3.1"
+Preferences = "1.4.3"
 Test = "1.10"
 julia = "1.10"
 

README.md

@@ -1,8 +1,16 @@
-# ITensorPkgSkeleton
+# ITensorPkgSkeleton.jl
 
 [![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://ITensor.github.io/ITensorPkgSkeleton.jl/stable/)
 [![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://ITensor.github.io/ITensorPkgSkeleton.jl/dev/)
 [![Build Status](https://github.com/ITensor/ITensorPkgSkeleton.jl/actions/workflows/CI.yml/badge.svg?branch=main)](https://github.com/ITensor/ITensorPkgSkeleton.jl/actions/workflows/CI.yml?query=branch%3Amain)
 [![Coverage](https://codecov.io/gh/ITensor/ITensorPkgSkeleton.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/ITensor/ITensorPkgSkeleton.jl)
 [![Code Style: Blue](https://img.shields.io/badge/code%20style-blue-4495d1.svg)](https://github.com/invenia/BlueStyle)
 [![Aqua](https://raw.githubusercontent.com/JuliaTesting/Aqua.jl/master/badge.svg)](https://github.com/JuliaTesting/Aqua.jl)
+
+```julia
+using ITensorPkgSkeleton: ITensorPkgSkeleton
+# This step might be required to circumvent issues with
+# the version of git installed by `Git.jl`.
+ITensorPkgSkeleton.use_system_git!()
+ITensorPkgSkeleton.generate("NewPkg")
+```

src/ITensorPkgSkeleton.jl

@@ -1,5 +1,69 @@
 module ITensorPkgSkeleton
 
-# Write your package code here.
+using Git: git
+using Git_jll: Git_jll
+using PkgSkeleton: PkgSkeleton
+using Preferences: Preferences
+
+# Configure `Git.jl`/`Git_jll.jl` to
+# use the local installation of git.
+using Preferences: Preferences
+function use_system_git!()
+  git_path = try
+    readchomp(`which git`)
+  catch
+    nothing
+  end
+  if !isnothing(git_path)
+    Preferences.set_preferences!("Git_jll", "git_path" => git_path)
+  end
+end
+
+# Get the default branch name.
+# This might be an alternative but it doesn't work for some reason:
+# ```julia
+# using LibGit2: LibGit2
+# LibGit2.get(AbstractString, LibGit2.GitConfig(), "init.defaultBranch")
+# ```
+function default_branch_name()
+  return try
+    readchomp(`$(git()) config --get init.defaultBranch`)
+  catch
+    "main"
+  end
+end
+
+function change_branch_name(path, branch_name)
+  original_dir = pwd()
+  cd(path)
+  original_branch_name = readchomp(`$(git()) branch --show-current`)
+  run(`$(git()) branch -m $original_branch_name $branch_name`)
+  cd(original_dir)
+  return nothing
+end
+
+function generate(pkg_name)
+  # TODO: Use `joinpath(first(DEPOT_PATH), "dev", pkg_name)`?
+  pkg_path = joinpath(homedir(), ".julia", "dev", pkg_name)
+  template_dir = joinpath(pkgdir(ITensorPkgSkeleton), "templates", "default")
+
+  branch_name = default_branch_name()
+  ## TODO: Allow customization of these, currently
+  ## they are hardcoded in the template.
+  user_replacements = Dict([
+    "GHUSER" => "ITensor",
+    "USERNAME" => "ITensor developers",
+    "USEREMAIL" => "support@itensor.org",
+  ])
+  PkgSkeleton.generate(
+    pkg_path;
+    templates=[template_dir],
+    user_replacements,
+  )
+
+  # Change the default branch.
+  change_branch_name(pkg_path, branch_name)
+  return nothing
+end
 
 end

templates/default/.pre-commit-config.yaml

@@ -0,0 +1,13 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.5.0
+  hooks:
+  - id: check-merge-conflict
+  - id: check-toml
+  - id: check-yaml
+  - id: end-of-file-fixer
+    exclude_types: [markdown]  # incompatible with Literate.jl
+- repo: https://github.com/qiaojunfeng/pre-commit-julia-format
+  rev: v0.2.0
+  hooks:
+  - id: julia-format