Initial package import

.github/dependabot.yml

@@ -0,0 +1,21 @@
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+version: 2
+enable-beta-ecosystems: true # Julia ecosystem
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+    ignore:
+      - dependency-name: "crate-ci/typos"
+        update-types: ["version-update:semver-patch", "version-update:semver-minor"]
+  - package-ecosystem: "julia"
+    directories:
+      - "/"
+      - "/docs"
+    schedule:
+      interval: "daily"
+    groups:
+      all-julia-packages:
+        patterns:
+          - "*"

.github/workflows/CI.yml

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+name: CI
+on:
+  push:
+    branches:
+      - main
+    tags: ['*']
+  pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event_name }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+jobs:
+  test:
+    name: Julia ${{ matrix.version }} - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        version:
+          - '1.10'
+          - '1.11'
+          - '1'
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: julia-actions/setup-julia@v2
+        with:
+          version: ${{ matrix.version }}
+      - uses: julia-actions/cache@v2
+      # PureKLU is not yet registered in General; develop it from the SciML repo so the
+      # dependency resolves on every Julia version (`[sources]` in Project.toml covers 1.11+,
+      # but this keeps 1.10 green too). Remove once PureKLU is registered.
+      - name: Develop unregistered PureKLU dependency
+        run: julia --color=yes --project=. -e 'using Pkg; Pkg.develop(url="https://github.com/SciML/PureKLU.jl")'
+      - uses: julia-actions/julia-buildpkg@v1
+      - uses: julia-actions/julia-runtest@v1

.github/workflows/FormatCheck.yml

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+name: format-check
+
+on:
+  push:
+    branches:
+      - 'main'
+      - 'release-'
+    tags: '*'
+  pull_request:
+
+jobs:
+  runic:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: julia-actions/setup-julia@v3
+        with:
+          version: '1'
+      - uses: fredrikekre/runic-action@v1
+        with:
+          version: '1'

.github/workflows/SpellCheck.yml

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+name: Spell Check
+
+on: [pull_request]
+
+jobs:
+  typos-check:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Actions Repository
+        uses: actions/checkout@v6
+      - name: Check spelling
+        uses: crate-ci/typos@v1.18.0

.github/workflows/TagBot.yml

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+name: TagBot
+on:
+  issue_comment:
+    types:
+      - created
+  workflow_dispatch:
+jobs:
+  TagBot:
+    if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: JuliaRegistries/TagBot@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          ssh: ${{ secrets.DOCUMENTER_KEY }}

.gitignore

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+*.jl.cov
+*.jl.*.cov
+*.jl.mem
+/Manifest.toml
+/test/Manifest.toml
+/docs/build/

.typos.toml

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+# Identifiers carried over verbatim from the SuiteSparse C sources during the
+# port. They are variable names, not prose, so the spell checker should leave
+# them alone.
+[default.extend-words]
+pn = "pn"        # pointer-name index (AMD)
+lik = "lik"      # L[i,k] entry (solve kernels)
+hashi = "hashi"  # hash-bucket index (AMD supervariable hashing)

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2026 SciML Open Source Scientific Machine Learning
+Copyright (c) 2026 Chris Rackauckas and contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Project.toml

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+name = "SparseWithDenseRowColMatrices"
+uuid = "80e09e16-2b43-4bb0-96aa-b2ce656e0cca"
+authors = ["Chris Rackauckas <accounts@chrisrackauckas.com> and contributors"]
+version = "0.1.0"
+
+[deps]
+LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+PrecompileTools = "aea7be01-6a6a-4083-8856-8a6e6704d82a"
+PureKLU = "0c0d3e7f-3a8b-4f7e-b6f1-9a4d2e7c1f01"
+SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
+
+[weakdeps]
+LinearSolve = "7ed4a6bd-45f5-4d41-b270-4a48e9bafcae"
+
+[extensions]
+SparseWithDenseRowColMatricesLinearSolveExt = "LinearSolve"
+
+# PureKLU is not yet registered in General; resolve it from the SciML repo. `[sources]`
+# is honored on Julia 1.11+; on 1.10 (and for registration) PureKLU must be added/registered
+# separately — see the CI workflow and README.
+[sources]
+PureKLU = {url = "https://github.com/SciML/PureKLU.jl"}
+
+[compat]
+Aqua = "0.8"
+ForwardDiff = "0.10, 1"
+LinearAlgebra = "1"
+LinearSolve = "3"
+PrecompileTools = "1"
+PureKLU = "0.1"
+Random = "1"
+SafeTestsets = "0.1"
+SparseArrays = "1"
+Test = "1"
+julia = "1.10"
+
+[extras]
+Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
+LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
+LinearSolve = "7ed4a6bd-45f5-4d41-b270-4a48e9bafcae"
+Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
+SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
+Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+
+[targets]
+test = ["Aqua", "ForwardDiff", "LinearAlgebra", "LinearSolve", "Random", "SafeTestsets", "SparseArrays", "Test"]