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-rw-r--r--web/cgit-taz/default.nix73
1 files changed, 73 insertions, 0 deletions
diff --git a/web/cgit-taz/default.nix b/web/cgit-taz/default.nix
new file mode 100644
index 000000000000..d18c782907dc
--- /dev/null
+++ b/web/cgit-taz/default.nix
@@ -0,0 +1,73 @@
+# This derivation configures a 'cgit' instance to serve repositories
+# from a different source.
+#
+# In the first round this will just serve my GitHub repositories until
+# I'm happy with the display.
+
+{ depot, ... }:
+
+with depot.third_party;
+
+let
+  sourceFilter = writeShellScriptBin "cheddar-about" ''
+    exec ${depot.tools.cheddar}/bin/cheddar --about-filter $@
+  '';
+  cgitConfig = writeText "cgitrc" ''
+    # Global configuration
+    virtual-root=/
+    enable-http-clone=1
+    readme=:README.md
+    about-filter=${sourceFilter}/bin/cheddar-about
+    source-filter=${depot.tools.cheddar}/bin/cheddar
+    enable-log-filecount=1
+    enable-log-linecount=1
+    enable-follow-links=1
+    enable-blame=1
+    mimetype-file=${mime-types}/etc/mime.types
+    logo=/plain/fun/logo/depot-logo.png
+
+    # Repository configuration
+    repo.url=depot
+    repo.path=/var/git/depot/
+    repo.desc=tazjin's personal monorepo
+    repo.owner=tazjin <mail@tazj.in>
+    repo.clone-url=https://git.tazj.in
+  '';
+
+  thttpdConfig = writeText "thttpd.conf" ''
+    port=2448
+    dir=${cgit}/cgit
+    nochroot
+    novhost
+    cgipat=**.cgi
+  '';
+
+  # Patched version of thttpd that serves cgit.cgi as the index and
+  # sets the environment variable for pointing cgit at the correct
+  # configuration.
+  #
+  # Things are done this way because recompilation of thttpd is much
+  # faster than cgit and I don't want to wait long when iterating on
+  # config.
+  thttpdConfigPatch = writeText "thttpd_cgit_conf.patch" ''
+    diff --git a/libhttpd.c b/libhttpd.c
+    index c6b1622..eef4b73 100644
+    --- a/libhttpd.c
+    +++ b/libhttpd.c
+    @@ -3055,4 +3055,6 @@ make_envp( httpd_conn* hc )
+
+         envn = 0;
+    +    // force cgit to load the correct configuration
+    +    envp[envn++] = "CGIT_CONFIG=${cgitConfig}";
+         envp[envn++] = build_env( "PATH=%s", CGI_PATH );
+     #ifdef CGI_LD_LIBRARY_PATH
+  '';
+  thttpdCgit = thttpd.overrideAttrs(old: {
+    patches = [
+      ./thttpd_cgi_idx.patch
+      thttpdConfigPatch
+    ];
+  });
+in writeShellScriptBin "cgit-launch" ''
+  exec ${thttpdCgit}/bin/thttpd -D -C ${thttpdConfig}
+''