From fde90b545609e61680e2134b9adb78b52b7312ce Mon Sep 17 00:00:00 2001
From: SpatLyu <lyu.geosocial@gmail.com>
Date: Fri, 19 Jun 2026 00:00:01 +0800
Subject: [PATCH 1/3] first cran submission

---
 .Rbuildignore   | 1 +
 CRAN-SUBMISSION | 3 +++
 2 files changed, 4 insertions(+)
 create mode 100644 CRAN-SUBMISSION

diff --git a/.Rbuildignore b/.Rbuildignore
index f5253e2..b3e9ac2 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -6,3 +6,4 @@
 ^pkgdown$
 ^cran-comments\.md$
 ^build-vignettes\.md$
+^CRAN-SUBMISSION$
diff --git a/CRAN-SUBMISSION b/CRAN-SUBMISSION
new file mode 100644
index 0000000..75bbd94
--- /dev/null
+++ b/CRAN-SUBMISSION
@@ -0,0 +1,3 @@
+Version: 0.1
+Date: 2026-05-11 12:16:10 UTC
+SHA: 6c1e75f6e2bab1733bfb345cbd8feb6e942b0516

From b4977d020cdb42209338d55b6fcb8d3306573a94 Mon Sep 17 00:00:00 2001
From: SpatLyu <lyu.geosocial@gmail.com>
Date: Fri, 19 Jun 2026 00:00:01 +0800
Subject: [PATCH 2/3] update installation intro

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 953b9b0..5dbc99b 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@
 - Install from [CRAN](https://CRAN.R-project.org/package=coupling) with:
 
 ``` r
-install.packages("coupling", dep = TRUE)
+install.packages("coupling", dependencies = TRUE)
 ```
 
 - Install binary version from [R-universe](https://stscl.r-universe.dev/coupling) with:
@@ -36,7 +36,7 @@ install.packages("coupling", dep = TRUE)
 install.packages("coupling",
                  repos = c("https://stscl.r-universe.dev",
                            "https://cloud.r-project.org"),
-                 dep = TRUE)
+                 dependencies = TRUE)
 ```
 
 - Install from source code on [GitHub](https://github.com/stscl/coupling) with:

From 5df48c6e613ba88483add44aa702ed757f605241 Mon Sep 17 00:00:00 2001
From: SpatLyu <lyu.geosocial@gmail.com>
Date: Fri, 19 Jun 2026 00:00:01 +0800
Subject: [PATCH 3/3] use pak instead of devtools

---
 README.md | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 5dbc99b..63fa531 100644
--- a/README.md
+++ b/README.md
@@ -42,12 +42,10 @@ install.packages("coupling",
 - Install from source code on [GitHub](https://github.com/stscl/coupling) with:
 
 ``` r
-if (!requireNamespace("devtools")) {
-    install.packages("devtools")
+if (!requireNamespace("pak", quietly = TRUE)) {
+    install.packages("pak")
 }
-devtools::install_github("stscl/coupling",
-                         build_vignettes = TRUE,
-                         dep = TRUE)
+pak::pak("stscl/coupling", dependencies = TRUE)
 ```
 
 ## References