slight changes

Signed-off-by: d4v1d03 <a_pandey1@ce.iitr.ac.in>

docs/kpm_sparse_checkout.md

@@ -4,13 +4,35 @@
 kpm which is the package management tool for KCL, does not support sparse-checkout, which means an issue arises when dealing with monorepos, which may contain many KCL packages. We need to get a solution to download specific packages instead of all in a monorepo.
 
 ## 2. Design research 
-A solution to this problem lies onto using GithubAPIs for kpm. The API can be used to fetch repository contents and then processing the response data to list the sub-directories of a specific monorepo. On listing the subdirectories, we can make the user toggle between different packages and press *space* to select the packages they want according to their project.
+A solution to this problem lies onto using GithubAPIs for kpm. The API can be used to fetch repository contents and then processing the response data to list the sub-directories of a specific monorepo. 
 
-## 3. Implementation steps 
+## 3. User Interface 
+The user will have to enter the command 
+```
+kpm add <github_repo_url>
+```
+to get the list of all the subdirectories(recursively all the directories which had a kcl.mod file in it). The user now has to toggle between the output subdirectories and press 'space' to select the ones which they want to keep. 
+
+Considering the nginx-ingres module, on typing the command 
+
+```
+kpm add <url of nginx-ingres>
+``` 
+kpm will list the two subdirectories as 
+- restrict-ingress-annotations
+- restrict-ingress-paths
+
+The user now has to select which package they want according to their project.
+
+The experience for the user will be completely different than any other package manager installing packages or package subdirectories.
+
+## 4. Implementation steps for the functionality
 - setting up the Github API Access
 - make a request to the endpoint `GET /repos/{owner}/{repo}/contents/{path}`
 - parsing the JSON response to identify directories and subdirectories
 - recursively fetch and process the contents of each directory to get a full list of subdirectories
-- integrate it with the kpm code
+- integrate it with the kpm code and update the kcl.mod accordingly
+
+## 5. Integration and the use of go-getter to download the specific subdirectories
 
-we will use Go's standard libraries for HTTP requests and JSON decoding, might need to handle additional error and edge cases.
+The repoUrl field in the struct `CloneOptions` in kpm/pkg/git/git.go will be given the subdir url accordingly, which then downloads each selected subdirectory one by one.